What is the passing of characteristics from parents to offspring called?
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What is the passing of characteristics from parents to offspring called?
Heredity
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The science of heredity and the process by which traits are passed from parents to offspring?
Genetics
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What is the F1 generation?
The offspring of the P generation
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What are the 1st two individuals in a cross known as …
P generation
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What does a Punnett Square predict?
The possible outcomesOf a genetic cross
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What are the different versions of a gene called?
Alleles
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DD
dd
HOMOZYGOUS OR HETEROZYGOUS?
Ff
FFff
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Explain what the word heterozygous means
“Different”2 different letters (Dd)
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Capt. Jack Sparrow’s “weird” way in running is a homozygous trait ( r ) that only certain pirates possess. If Jack Sparrow decides to marry another female pirate who is heterozygous for normal running, what would be the genotypes of their potential offspring?
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R = red hairr = brown hair
If a person has the genotype rr, what is their phenotype and why?
Phenotype: brown hairBoth recessive alleles
Are present so they will Express the recessive trait
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“Alleles of different genes separate independently of one another during gamete formation”
TheLaw of Independent
Assortment
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What does the word phenotype mean?
“Physical” AppearanceOf a genetic trait
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A word that describes when you have two of the same allele…
Homozygous
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S s
S
S
SS Ss
SS Ss
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In goblin sharks the ability to extend their jaw past their body is dominant. If a heterozygous dominant shark mates with another heterozygous shark, how many of their offspring will not be able to extend their jaws.
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What is the law that states that two alleles separate when gametes are formed?
The Law of Segregation
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n
N
n n
NnNn
n n n n
What is the genotypic ratio?
What is the phenotypic ratio?
N= nine toesn = ten toes
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How could you find the genotype of an individual that is unknown?
Test Cross
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Mimicking noises is a dominant trait for the Lyrebird. The recessive condition makes it so the bird is not able to mimic any noises.
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A mimicking male bird and a non-mimicking female bird are crossed, however you do not know the exact genotype of the mimicking male bird. Show ALL the Punnett squares which could represent this cross.