To: Honors/Pre-IB Biology Students Page 1 of 2 Fr: Mrs ......To: Honors/Pre-IB Biology Students Page...
Transcript of To: Honors/Pre-IB Biology Students Page 1 of 2 Fr: Mrs ......To: Honors/Pre-IB Biology Students Page...
To:Honors/Pre-IBBiologyStudents Page1of2Fr:Mrs.GeorgoDate:May18,2020Re:AssignmentsforMay18–June5(Packet#4)–ReviewofBiology
Reminders:
-Wearealmostthere!Hanginthereeverybody.Iappreciateyourhardworkandeffort.
-Yourassignmentsarepostedhere:Granby’swebpage/OurSchool/LearninginPlace/Science/Georgo/HonorsPre-IBBiology(thedistrict’slearningpacketisassignedtoGeneralBiology)-ThesesameassignmentsarealsopostedonGoogleClassroom.-Whatyou’vedonesofarsinceschoolsclosedonMarch16th:*Assignmentpacket#1(classification,evolution,J-labs,geneticdisorder1-pager)-March17-April3*Assignmentpacket#2(prokaryotes/bacteria,virusesandinfectiousdiseases)-April6-24*Assignmentpacket#3(ecology)-April27-May15-Ifyou’reable,pleasegotoGoogleClassroomtodoyourassignments(usetheaccesscodesIgaveyou).Ifyouneedaprintedpacketfromschool,pleasecheckGranby’swebsiteannouncementofdatesandtimesofdistribution.-SendmecompletedworkonlineviaGoogleClassroomorasattacheddocumentsinanemail.Completedpaperpacketscanalsobedroppedoffatschool.(seep.2)-Pleasecontinuetocheckyourschoolemailregularly.Ihavesentseveralemails(tostudentsandparents)sinceMarch17th.-IfyouwanttojoinusforZoom,reminderthatImusthaveyourparent/guardian’semailedpermissiononrecord.-E-mailmeifyouhavequestions.-Takegoodcareofyourselfandkeepgrowinginknowledgetheselastfewweeksofschool.CONTINUED...
AssignmentList:ReviewofBiologyTopics Page2of2Pleasefollowtheorderbelowwhencompletingyourassignments.Readthedirectionsbeforestartinganassignment.Checktheassignmentsoffonthislistasyoucompletethem.____1.ReviewquestionsonComponentsofaControlledExperiment____2.ReviewquestionsonIndependentandDependentVariables____3.ReviewquestionsonStructureandPropertiesofWater____4.ReviewquestionsonMacromolecules____5.ReviewquestionsonEnzymes____6.ReviewquestionsonPhotosynthesisandCellRespiration____7.ReviewquestionsonMitosisandtheCellCycle____8.ReviewquestionsonMeiosisandReproduction____9.ReviewquestionsonDNA,RNA,andProteinSynthesis____10.FinalBiologyReviewLearninginPlacePacketSubmission(PaperCopies)-BeginsMay12,2020Studentswillhavetwooptionstosubmitpapercopiesofcompletedpackets:
1. Atstudent’scurrenthomeschooltoexpediteprocessingonTuesdaysandThursdaysbetween10:00a.m.–2:00p.m.atadrop-offbinattheschool(Youwillbegivenacoverpagetoattachtoyourworkwithyournameandsubjectarea.)
OR
2. Scanpackets(ortakepictures)andemailtotheirteachersdirectlyorthroughGoogleClassroom
ToaccesstheNPSstudentemail:1-StudentsshouldgototheNPShomepageandchoosetheForStudentslink.
Thelinktostudentemailwillbeontheleft.
2-Studentsshouldloginwiththeirstudentemailaddressastheirusername.Theemailaddresswillbethestudent’[email protected]
Example:[email protected]
3-Thepasswordisthelast5numbersofthestudent'sstudentIDnumber.(Ifalibrarianchangedastudent’spasswordthisyear,thenusethatpassword.)
Review Topic: Components of a Controlled Experiment Name ______________________ Directions: After reading the description of the experiment below, identify the components listed below. Grace wanted to find out if adding calcium to the food that she gives to her chickens on the farm would result in thicker eggshells. She believed that the added calcium would make the shells thicker and therefore stronger. In her experiment she studied 20 chickens for 4 months. The 10 chickens in group1were given five cups of plain chicken feed daily. The 10 chickens in group 2 were given five cups of the chicken feed plus the calcium supplement daily. The chickens were all the same variety, the same gender (females), and the same age. Their eggs were examined regularly during the experimental period. At the end of the experiment Grace’s data showed that the calcium did result in thicker, stronger eggshells. Problem:(Question)
Hypothesis:(If/Then) Independent Variable (IV):
Dependent Variable (DV):
Constants (5): * * * * *
Experimental Group:
Control Group: Conclusion: (complete sentence)
ReviewTopic:IndependentandDependentVariables Name______________________________
Identifytheindependentvariable(manipulatedbytheexperimenterorscientist)anddependentvariable(changesonitsownandismeasured).1.Thehigherthetemperatureofwater,thefastertheeggwillcook.IV:___________________________________________________
DV:__________________________________________________
2.Aninvestigationwasdonetoseeifkeepingthelightsonforadifferentamountoftimeeachdayaffectedthenumberofeggsachickenlays.IV:___________________________________________________
DV:__________________________________________________
3.Thetimeittakestorunamiledependsontheamountofexerciseapersongets.IV:__________________________________________________
DV:__________________________________________________
4.Grasswillgrowtallerifitiswateredandfertilizedmore.IV:__________________________________________________
DV:__________________________________________________
5.Aninvestigationwasperformedtoseeifcornseedswouldsproutatdifferentrates,dependingonthetemperatureoftheairinwhichtheywereplaced.IV:___________________________________________________
DV:___________________________________________________
6.Theamountofalgaegrowthinlakesseemstobedirectlyrelatedtothenumberofbagsoffertilizersoldtopeopleatlocalstores.IV:___________________________________________________
DV:__________________________________________________
7.ThescoreontheA.P.examdependedonthenumberofpracticequestionsthestudentcompleted.
IV:__________________________________________________
DV:__________________________________________________
8.Astudywasdonewithmicetoseeifthenumberofoffspringbornwith“birth-defects”wasrelatedtothenumberofminutesofexposuretox-rays.
IV:__________________________________________________
DV:__________________________________________________
ReviewTopic:Structure&PropertiesofWaterName___________________________________
I.StructureofWater
6.Draw2watermoleculesbelowjoinedbyabondbetweenthecorrectatoms.
Theweakbondjoining2watermoleculesiscalleda____________________bond.
II.PropertiesofWater
___1.capillaryactionA.helpscoolthebody___ 2. expansion when it freezes B. cohesion causes the surface layer of water to act like a stretched film over water ___ 3. high heat of vaporization C. plays a major role in getting water from the roots to the top of trees ___ 4. resistant to temperature change D. water can dissolve almost anything ___ 5. surface tension E. causes regions near bodies of water to vary less in temperature ___ 6. universal solvent F. causes ice to be less dense and keeps fish alive in frozen ponds
1.Labelthe2hydrogenatomsinthediagram“H.”2.Labelthe1oxygenatominthediagram“O.”3.Labelthecovalentbondsinthediagram.4.Placeapositive(+)ornegative(-)chargeonthehydrogenandoxygenatoms.5.Becausethewatermoleculeispositiveononeendandnegativeontheoppositeend,itiscalleda______________molecule.
ReviewTopic:Macromolecules Name___________________________
Wordbank:Identifyeachitemas:Carbohydrate,Lipid,Protein,NucleicAcid
Monomers(buildingblocks):1.____nucleotides2.____aminoacids3.____sugar/monosaccharide4.____fattyacid&glycerol
Functions:5.____providesquickenergy,foundincellmembrane6.____carriesgeneticinformation,involvedinmakingprotein7.____provides&storesenergy,makesupcellmembrane,insulates8.____makesupstructures(muscles,nails,hair),fightsdiseases,speedsupchemicalreactions
Examples:9.____fats,waxes,oils,phospholipids10.___enzymes,antibodies11.___DNA,RNA12.___glucose,sucrose,starch,cellulose
Structures:
13.____14.____
15.____16.____
ReviewTopic:EnzymesName____________________________________
1. Basicfactsaboutenzymes:a) Theyareaspecialtypeof:(circleone)carbohydratelipidproteinnucleicacidb) Theyarecalled“catalysts”becausetheydowhattochemicalreactions?____________________
2. Labelthediagrambelow(enzyme,activesite,substrate).
______________________
__________________
_______________
a. Themolecule(orreactant)thattheenzymeactsonduringachemicalreactionisthe__________________________.
b. Thechemicalreactionoccursinthispartoftheenzyme:______________________
c. Mostenzyme’snamesendinthesuffix
3.EnzymesareSPECIFICtotheirsubstrates.
Studyandusethediagramtoputtheseriesofeventsbelowinthecorrectorder.Numberthesteps1-5(1beingthefirststepand5beingthelaststep).____Enzymerecycled____Substratetransformedintoproducts____Productsreleased____Substrateapproachesactivesite____Enzyme-substratecomplexforms4.EnergyofActivation(Eact)isrequiredforachemicalreactiontotakeplace.
a.Whichchemicalreactionhasalowerenergyofactivation—onethatiscatalyzedbyanenzymeoronethatisnot?_________________________________b.True/False:Anenzymeisnotchangedorconsumedinachemicalreactionandcanbeusedagain.______________________
ReviewTopic:PhotosynthesisandCellRespiration Name___________________________
1.Writetheequationforphotosynthesis:________+________!________+________2.Writetheequationforcellrespiration:________+________!________+________+_______
3.Which2gasescyclebetweenphotosynthesisandcellrespiration?_______________and______________
Photosynthesis
Write“PHS”ifitdescribesphotosynthesisand“CR”ifitdescribescellrespiration.4.Capturesandstoresenergy______5.Occursinchloroplasts______6.Carriedoutbyalllivingthings_____7.Occursinmitochondria_____8.Carriedoutbyonlyautotrophs(producers)_____9.Breaksdownfoodtoprovideorganismswithenergy_____10.Canbeaerobicoranaerobic_____11.Consistsofglycolysis,Krebscycle,andelectrontransportchain12.Consistsoflight-dependentandlight-independentreactions
ReviewTopic:Mitosis&CellCycle Name:___________________________________
Wordbank:Prophase,Metaphase,SisterChromatid,SpindleFiber,Interphase,Anaphase,Cytokinesis,10,20,40,Telophase,Centromere,Mitosis,Nucleus,SomaticCell,DNA
______________1.Duringwhatphaseofmitosisdocentromeresdivideandthechromosomesmovetoward
thepoles?
______________2.Whatisthephasewherechromatin-containingDNAcondenses(thickens)toform
chromosomes?
______________3.Whatisthenameofthestructurethatconnectsthetwosisterchromatids?
______________4.Inachromosomeconnectedbyacentromere,whatiseachindividualstrandcalled?
______________5.Ifacellstartsmitosiswith20chromosomes,howmanychromosomeswilleachdaughter
cellhave?
______________6.Whatstructureformsinprophasethathelpthechromosomesmoveinthecell?
______________7.Whichphaseofmitosishaschromosomeslinedupinthemiddleofthecell(equator)?
______________8.Whichpartofthecellcycleischaracterizedbyacellgrowingandpreparingtodivide?
______________9.Skincells,bonecells,stomachcells,andotherbodycellsarecalled_____cellsanddivide
bymitosis.
______________10.WhatreplicatesduringtheS-stageofmitosis?
______________11.Whichorganelleorganizesthespindlefibersatthepolesofthecell?
______________12.Whichorganelledividesduringmitosis?
______________13.Duringwhichpartofthecellcycledoesthecytoplasmdividetoformtwodaughtercells?
Review Topic: Meiosis & Reproduction Name ________________________________ Part 1: Match the description with the terms.1. ___ chromosomes that are the same size, shape, and have similar genes 2. ___ a cell with only half the number of the total number of chromosomes 3. ___the phase when independent assortment occurs 4. ___ a name for sperm and egg 5.___ when genes are exchanged between homologous chromosomes 6.___ the event that occurs before meiosis begins
a. prophase I b. diploid c. crossing-over d. sister chromatids e. interphase f. haploid g. homologous h. gametes i. metaphase I j. somatic/body cells
Part 2. Answer the questions about the diagram below on sexual reproduction. + ! A B C Note: The questions below apply to humans. 7. Identify the names of the three human cells in the above diagram: A _________ B _________C __________ 8. When B unites with A to form C, the event is called _______________________. 9. Determine the number of chromosomes found in each human cell above. A______ B______ C______ 10. Which “equation” below accurately describes the cells above? (circle one) a) diploid + diploid = haploid b) diploid + haploid = diploid c) haploid + haploid = diploid Part 3: Miscellaneous
11. Describe what is happening in the picture below. Give the a) name of event and b) describe what happens.
12. Meiosis produces cells that become gametes, but mitosis produces cells that become _________________ cells, such as skin cells, stomach cells, and white blood cells. 13. Meiosis involves this many divisions _____(#), while mitosis involves this many divisions _____(#). 14. An organism has 15 chromosomes in its sperm cell. Its liver cell would have _____ (#) chromosomes. 15. An organism has 48 chromosomes in its skin cell. Its egg cell would have ___ (#) chromosomes. 16. Give 3 methods of asexual reproduction (names only): 1) 2) 3) 17. True / False: DNA on the chromosomes replicate before mitosis and before meiosis.
(fertilized egg)
a) b)
ReviewTopic:DNA,RNA,&ProteinSynthesis Name___________________________Page1of3
1. DNAisanorganicmacromoleculecalleda________________________.2. DNAisapolymerandismadeofthemonomercalled______________________.3. The3partsofanucleotideare________________________________________________________.4. ThecomplementarynitrogenbasepairsinDNAare____________________________________.5. Thecomplementarybasesarejoinedtogetherby_________________bonds.6. ThestructureofDNAwasdiscoveredbythese2scientists:_____________________________7. These2scientistsusedthex-rayphotoofDNAcreatedbyRosalindFranklintodeterminethatthe
structureofDNAisdescribedasa_________________________.
8. DNAhasthegeneticcodeformaking_______________,whichgiveusourtraits.9. AchangeintheDNAiscalleda________________,whichcanaffectanorganism’straitsor
phenotypes.10. DNAislocatedinthe_____________ofeukaryoticcells,andinthe______________ofprokaryotic
cells.
DNAReplication
1. WhathappenswhenDNAreplicates?___________________________________________________2. DuringwhichpartofthecellcycledoesDNAreplicate?_____________________________________3. WhymustDNAreplicatebeforeacelldividestoformtwodaughtercells?___________________________________________________________________________________
4. Theenzymecalled________________________unzipstheoriginalDNA.a) Itdoesthisbybreaking_________________bondsbetweencomplementary____________
(betweentheA–TandbetweentheG–C).5. Theenzymecalled________________________helpstobuildtwonewstrandsofDNAagainstthe
twooriginalstrands.a) Itdoesthisbyjoiningfree-floating____________________totheir______________________
basesonthetwooriginalstrandsofDNA.(A–TandG–C)6. AttheendofreplicationtherearetwoDNAmoleculesthatare_________________.Whenthecell
divides,oneDNAmoleculeendsupinonedaughtercellandtheotherDNAmoleculeendsupintheotherdaughtercell.
7. Eachoriginalstrandservesasa__________________(ormodel)forbuildinganewstrandofDNA.8. ThetwoDNAmoleculesthatresulteachhaveoneoldstrandandone___________strand.
RNA&ProteinSynthesisPage2of3
1. RNAisanorganicmacromoleculecalleda___________________________.2. RNAisapolymerandismadeofmonomerscalled_____________________.3. The3kindsofRNA,__________,_________,and________aredirectlyinvolvedinmaking
______________,whicharemadeintheribosomes.4. ThegeneticcodeinDNAiscopiedontothistypeofRNA:_________
5. a)IfthesequenceinDNAisshownbelow,whatistheRNAthatismadefromit?DNA:GTCTAGGCATGARNA:________________________
b)IfthesequenceinRNAisshownbelow,whatistheDNAthatismadefromit?
RNA:CACAUCGCUAGADNA:________________________
6. Sequenceformakingaprotein:DNA!____________!aminoacids!____________!trait
Mutations
ProteinX(normal)
DNA: AGGCTTCAT
mRNA:__________________
aminoacids:________________________(usecodonchartorp.367)
ProteinX(abnormal)–Thereisamutationinthetwoadenine(A)nucleotidesinDNA.Theywerechangedto“C.”
DNA: CGGCTTCCT
mRNA:__________________
aminoacids:________________________(usecodonchartorp.367)
Refertothediagram.Identify:
G-_____________
F-_____________
B-_____________
E-_____________
Transcription&Translation(RefertoyourmRNAcodonchartorp.367.) Page3of3
1 2 3 4 5
DNA
CGT
AGC
TGA
CAT
ACT
mRNACodon
tRNAAnticodon
AminoAcid
WritingaLetterUsingCodons
Directions:Usingthepersonalcodonchartbelow,writealettertoafriendaboutyourplanswhenwefinallygettoreturnto“normal”life.Itmustconsistofatleast5sentences,andwordsmustbereplacedby3-lettercodons.Forexample,theword“I”isreplacedbythecodon“UUU.”(Putspacesbetweencodons.)
PersonalCodonChart
U C A G
UIsummersleepfood
beachfamilyyouam
willeatwork-outmovies
havevisitdogcan
UCAG
C
andwatchhopeshopping
gotriprelaxingdo
togoingtvfun
thinkaredoingrestaurant
UCAG
A
wouldbabysitoutsidefriends
parentsgamesworklove
itduringwhenwith
islikewhatover
UCAG
G
happymusicquarantinea
betalkmyfavorite
outwarmtakethe
Netflixreadsunnyget
UCAG
Dear__________________,
From,
__________________
ReviewofBiology Name___________________________Page1of4
1. Putacheckmarknexttothecharacteristicsthataresharedbyalllivingthings.__respondstoenvironment__motile__homeostasis__needsoxygen__produces&usesenergy
2. Apersonsweatsonahotdaytocoolhisbodytomaintainbalance.Thisisanexampleof______________________.3. Putacheckmarknexttotheheterotrophs/consumers.
__plants__animals__fungi__mostbacteria__mostprotists4. Refertothediagrambelow.
5. Determinewhichtypeofsymbiosisisdemonstrated(mutualism,parasitism,orcommensalism).a. Abirdbuildsitsnestinatreeandhasahome.b. Bacteriainourdigestivesystemhelpdigestourfoodandinturnreceivesnutrients.c. Adoghasatickonitsbody.
6. Refertothefoodwebbelow.
7. Refertothediagrambelow.
8. WhyiswatercalledaPOLARmolecule?9. Whichthingsarenecessaryforwatertoclimbupatreeagainstgravity?(circleanswer)
a. adhesion,cohesion,&surfacetensionb. hydrogenbonding,adhesion/cohesion,&capillaryactionc. covalentbonding,adhesion,&highspecificheat
10. LabelthepHscale(acidic,basic,neutral).!-----------------------------------------------------------------------"0 7 14
11.a.Whichoneisastrongeracid?pH6orpH3b)Whichoneisastrongerbase?pH10orpH812.SubstanceXisdescribedbelow.Isitanacidorabase?_____________Itturnsbluelitmuspaperred.Itdoesnotchangethecolorofredlitmuspaper.ItspHisbelow7.13.CheckallthestatementsthatareTRUEaboutenzymes. __Aspecificenzymecanactonanykindofsubstrate.__Anenzymelowerstheenergyofactivationinchemicalreactions. __Anenzymespeedsupchemicalreactions.__Anenzymeisdestroyedafterachemicalreactioniscompleted. __Anenzymeisacarbohydrate. __Anenzymeisacatalyst.
[Organisms:plants(bottom),grasshoppers,birds,bobcat(top)]a.Nametheorganismsthataresecondaryconsumers.b.Whichlevelconsumergetsthemostenergy(1st,2nd,or3rd)?c.Whatpercentofavailableenergyispassedonasoneconsumereatsanother?d.Wheredotheproducersgettheirenergy?
a.Drawa5-stepfoodchainfromthefoodwebontheleft.(Startwithaproducerandusearrowstopointtotheconsumers.b.Listthe2producersinthefoodweb.
a.Drawanarrowonthegraphpointingtotheareacalledthe“carryingcapacity.”b.Whatisthedeerpopulationatthecarryingcapacity?
14.Whichcellorganelleisdescribedbelow?(nucleus,mitochondria,ribosome,chloroplast,vacuole) Page2of4a.ProducesATPenergyduringcellrespiration.b.Storeswater,food,wastes.c.ContainsDNAandcontrolsactivitiesofthecell.d.Whereproteinismade.e.WhereCO2andH2OareusedtomakeC6H12O6andO2.15.Themagnifyingpowerofamicroscope’seyepieceis10Xanditslowobjective45X.Whatisthetotalmagnification?_____16.Whichpersonlookedatcorkcellsoftreebarkandcalledthestructures“cells?”____________________17.Pasteursetuptheexperimentbelowtodisprovespontaneousgeneration.Describethistheory?__________________________
18.Checkallthestatementsthatarepartofthecelltheory.__Cellsarethebasicunitofstructureandfunctionofalllivingthings.__Cellshaveorganelleswithspecificfunctions.__Cellsaremicroscopic. __Cellscomefrompre-existingcells.__Livingthingsaremadeupofacell(s). __Cellsaresphericalinshape.19.Usingtheletters,writethecorrectorderofinterphaseandmitosisphases:____________________________
20.CheckallthestatementsthatapplytoVIRUSES.__Theyarenotmadeofcellsandthereforearenotliving.__Theycanreproduceonlywhentheyareinsideacell.__Theybelongtothesamekingdomasbacteria. __Theyuseenergy,grow&develop,andrespondtostimuli.21.Refertothediagrambelow.
22.Refertothediagrambelow.
23.CheckALLthestatementsbelowthatareTRUE.__Diffusionisatypeofactivetransportthatrequiresenergy.__Diffusionismovementofmaterialsfromhightolowconcentrations.__Moleculeswillcontinuetomoveequallyinbothdirectionsevenifconcentrationisthesameonbothsidesofthemembrane.__AcellwillburstinahypertonicsolutionandshrivelupinahypOtonicsolution.24.WhatarethemonomersorbuildingblocksofDNAandRNA?_______________________25.IfonestrandofDNAisTTGACCTGA,whatisthecomplementaryDNAstrand?________________________26.IftheDNAstrandin#25isusedasatemplatetomakeRNA,whatistheRNAstrand?________________________
a.Isthiscellaeukaryoteorprokaryote?b.Isthiscellaplant,animal,orbacteria?c.Howisaprokaryotedifferentfromaeukaryoteintermsofanucleus?
a.Whatisthecellstructureontheleft?b.Whatisitsfunction?c.Whichofitscomponentscanhelptransportmaterials?d.Thecellmembraneissemi-permeablemeaningthat...
27.Useyourcodonchartorpage367inthetextbooktofindtheaminoacidsthatthefollowingmRNAcodonscodefor.Page3of4a.CCG_____________b.GAU_____________c.CAC______________d.UGA_______________
28.Write“P”ifitdescribesphotosynthesisor“CR”ifitdescribescellrespiration.a.ItsmainproductisanenergymoleculecalledATP.b.Ithappensinthemitochondria.c.Itproducesoxygenforlivingthingsonearth.d.Ithappensinthechloroplasts.e.It’scarriedoutbyalllivingthings.
29.TrueorFalse:Theproductsofphotosynthesisarethematerialsneededforcellrespiration.
30.Individualsofapopulationthatarebetteradaptedtotheirenvironmentsurviveatahigherrate.ThiswastrueofthePepperedMothsduringEngland’sIndustrialRevolution.Thisisanexampleofwhichmechanismofevolution?_____________________
31.Whichscientistbelievedthatanacquiredtraitcanbepassedonfromparentstooffspring?(circleone)a.Darwinb.MalthusC.LamarckD.Linnaeus
32.CheckALLtheitemsbelowthatareevidenceofevolution.__similarembryodevelopment __geneticdrift(founder’seffectandbottleneckeffect)__non-randommating __fossilrecord__similaraminoacidsequenceinaprotein__homologous/vestigialstructures
33.a.Whatisavestigialstructure/organ?b.Nameastructureinthehumanbodythatisvestigial.34.Whichmechanismofevolutionisdescribedbelow?______________________PopulationAhaswhiteandbrownducks,andpopulationBhaswhiteducksonly.TwobrownducksleavepopulationAandgotopopulationB.OvertimepopulationBhasbothwhiteandbrownducks.35.Whydoessexualreproductionresultinmoregeneticdiversitycomparedtoasexualreproduction?
36.Thefruitfly,Drosophilamelanogaster,has8chromosomesinitsbodycells.Itsgamete(spermoregg)wouldcontainthisnumberofchromosomes:_______37.Refertotheinformationbelowtoanswerthequestion.
38.Refertothepedigreechartbelow.Albinismisduetoinheritingtworecessivealleles,onefromeachparent.Use“A”fordominantand“a”forrecessive.The2sonsingenerationIIarenormal.Whatistheirgenotype?______
Thefollowingcrosswasconducted:TTPPxttpp
a. Whatisthephenotypeoftheoffspringand%?
b. Listthepossiblegenotype(s)oftheoffspring.
Page4of439.Sicklecelldiseaseiscausedbyinheritingtworecessivealleles,onefromeachparent.Twoparentsarebothcarriersfortheallele(heterozygous).MakeaPunnettsquareanddeterminetheprobabilityofachildbeingbornwithsicklecelldisease.
Parents’genotypes:_____x____Punnettsquare:Probabilityofsicklecell:________%(useA/a)
40.Eyecolorisasex-linkedtraitinfruitflies.ThealleleislocatedontheXchromosome.Redeyesaredominant(R)andwhiteeyesarerecessive(r).Aheterozygousfemalewithredeyesmateswithamalethatalsohasredeyes.
a. Writethegenotypesofthetwoparents:_________x_________(hint:useX---X---andX---Y)b. MakeaPunnettsquarebelow.femalemale
c. Listthepossiblegenotypesoftheoffspring:________________________________________d. Whatisthepossibilityofhavinganoffspringwithredeyes?___________%e. Ofthemaleoffspringonly,whatistheprobabilityofhavingwhiteeyes?__________%
41.Refertothekaryotypetoanswerthequestions.
a.Whatistheperson’sgender?
Howdoyouknow?
b.Isthispersonnormal?
c.Doesthispersonhaveadisorder?
Ifso,whatisit?
d.Howwouldthiskaryotypebeadjustedto
showapersonwithDownsyndrome?
e.Whatisakaryotype?