The dihybrid AaBb x AaBb cross was carried out and resulted in a 9:3:4 progeny p
ID: 222898 • Letter: T
Question
The dihybrid AaBb x AaBb cross was carried out and resulted in a 9:3:4 progeny phenotypic ratio. If some of those dihybrid (AaBb) individuals were testcrossed, .....
Part A
what phenotypic ratio would you expect?
Enter your answer like this example: 9to3to3to1. Do not include any genotypes/phenotypes with your answer. Only enter the numbers in the ratio, separated by the word, to, with no spaces. The order of the phenotypes represented by your numbers should match the order of those represented by the given epistasis ratio (9:3:4).
Explanation / Answer
1to1to1to1
in a test cross only one type of gametes are formed ie; aabb = ab(gamete)
after crossing it with AaBb we would get AaBb, Aabb, aaBb and aabb in 1:1:1:1 ratio