Question

probability and heredity
vectored instruction
t
tt
tt
t
tt
tt
how many of the four offspring will be tall?
25% (1 out of 4)
50% (2 out of 4)
75% (3 out of 4)
0% (0 out of 4)

Explanation:

Step1: Determine the trait representation

In genetics, usually, a dominant trait (e.g., tallness if \(T\) is dominant) and recessive trait (e.g., shortness if \(t\) is recessive). Here all offspring have \(tt\) genotype.

Step2: Relate genotype to phenotype

If \(t\) represents the recessive (short) trait (assuming \(T\) is for tall and \(t\) is for short, and no \(T\) allele is present in any of the four \(tt\) offspring).

Answer:

0% (0 out of 4)