Biology 207 - Practice questions 7 - Sex chromosomes
Question 1 Recall from class that while mammals and flies both use an XX - XY sex
chromosome system they use different sex determination and dosage compensation
a) What would be the phenotype of an red / red cat if mammals used a sex determination
system and a dosage compensation system similar to Drosophila?
b) What would be the phenotype of an w / w fly if Drosophila used a sex determination
system and a dosage compensation system similar to mammals?
Question 2 (This is an old midterm question) In turkeys the Bh-gene is responsible for leg
morphology and the E-gene is responsible for feather colour. Wild type turkeys have strong
legs and bronze coloured feathers. You are in charge of a flock of