Answer to Question #149229 in Genetics for Kate

Question

5. A black guinea pig crossed with an albino guinea pig produces 12 black offspring. When the albino is crossed with a second black one, 7 blacks and 5 albinos are obtained.
a) What is the best explanation for these observations (i.e. what is the mode of inheritance)?
b) Given your answer for a)...
* What is the genotype of the first black guinea pig? 

* What is/are the genotype(s) of the gametes produced by this black guinea pig? 

* What is the genotype of the albino? 

* What is/are the genotype(s) of the gametes produced by this albino? 

* What is/are the genotype(s) of the offspring from this cross? 

* What is the genotype of the second black guinea pig? 


6. A rooster with grey feathers is mated with a hen of the same phenotype. Among their offspring, 15 chicks are gray, 6 are black, and 8 are white.
a) What is the mode of inheritance for feather colors in chickens?
b) What phenotypic ratio would you predict in the offspring from the mating of a gray rooster and a black hen?

Answer 1

Dear Kate, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order