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Parakeet Birds Punnett Square QUESTION!?
1) Feather colour in parakeet birds is controlled by 2 genes. One of thes genes is composed of 2 alleles: B produces blue, and b does not produce any colour, The other gene is composed of Y that produces a yellow colour, and y that produces no colour. The presence of B & Y makes green feathers
a) Find the genotype & phenotype of the F1 generation, crossed with BbYY and bbYy, show a punnett square in your complete answer
b) probability of a yellow bird from two parents that are heterozygous for green feathers. Show a punnett square in your complete answer
I'm going to assume you know how to draw a punnet square, and just need help with the set up.
a) Just form gametes from each one and cross, read the results.
BbYY x bbYy
Possible Gametes:
- BbYY: BY, bY
- bbYy: bY, by
Possible Genotypes: BbYY (Green), BbYy (Green), bbYY (Yellow), bbYy (Yellow)
b) Heterozygous for green means, they have BbYy as their genotypes.
BbYy x BbYy
Possible Gametes:
- BbYy: BY, By, bY, by
Possible Genotypes: BBYY, BBYy, BByy, BbYY, BbYy, Bbyy, bbYY (Yellow!), bbYy (Yellow!), bbyy
I believe it's 3/16 but im doing this in my head so double check to make sure.
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