1 Chromosome Theory of Heredity Everything you wanted to know but were afraid to ask!
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Transcript of 1 Chromosome Theory of Heredity Everything you wanted to know but were afraid to ask!
1
Chromosome Theory of Heredity
Everything you wanted to know but were afraid to ask!
Walter _______
Genes described by Mendel are on the ___________.
Chromosomal Theory of HeredityGenes located on chromosomes and each gene occupies a specific ______ on the chromosome
_____ Genes
Genes which effect another ______.
Expected vs. Actual 25% gray
normal 25% black
small 25% black
normal 25% grey small
___% gray normal
___% black small
___% black normal
___% grey small
Linkage groups
Genes that move together and are ______ linked
Crossing-Over
Some ______ amongst chromosomes
Gene map specific loci for genes
11
Sex Linked traits
On the ___ chromosomes (________ are non-sex chromosomes)
XY- location on the _ chromosome. _ Linked trait
Everybody ’s Mutations!!!Latin- mutation means ______
Chromosomal MutationsIf a _____ chromosome changes
___-disjunction
Chromosomes don’t _______
_______: 3N, 4N – ____ to humans, better in plants
Gene mutation
Mutations in the _______
____ mutation is in a single base sequence
Ex.
AUG, UAG, AUU, CUAAUG, UGG, AUU, CUA
Frame shift mutation
Moves the reading _____ of the sequence
x… frameshift
THE CAT ATE THE RAT
THE CTA TET HER AT
Gene expression
Genes code for _____
_____ and enzyme to cause phenotypes
________ dominance
ex. carnation colorenzymes don’t completely ________
__________
Both alleles show up.No small case lettersex. Blue chickens
________ Inheritance
Many genes causing phenotype
Karyotype
DiploidCells
HaploidCells