In pea plants, the allele for tall (T) is dominant to the allele for short (t). Which of the following is the percent of offspring that will be tall if a heterozygous plant (Tt) is crossed with a homozygous tall plant?

A. 100%

B. 75%

c. 50%

D. 25%

B?

I agree

To determine the percent of offspring that will be tall in a cross between a heterozygous plant (Tt) and a homozygous tall plant (TT), we can use Punnett square analysis.

First, we write down the genotype of each parent. The heterozygous plant (Tt) has the alleles T (tall) and t (short), while the homozygous tall plant (TT) has two copies of the allele T.

Let's set up the Punnett square:

| T | T |
---------------
T | TT | TT |
---------------
t | Tt | Tt |

From the Punnett square, we see that all the offspring will have the genotype Tt, which means they will be tall. Therefore, the percentage of offspring that will be tall is 100%.

So the correct answer is A. 100%.