Question

If two heterozygous tall pea plants are crossed, what would the expected genotypic ratio of the offspring be?(Hint: Use a Punnett Square)

a.
4 TT : 0 Tt : 0 tt
c.
1 TT : 1 Tt : 1 tt
b.
1 TT : 2 Tt : 1 tt
d.
0 TT : 0 Tt : 4 tt

Answer 1

It would be b. 1 TT: 2Tt: 1 tt. Because crossing two heterozygous parents means the genotypes for them are Tt and Tt. Which means that there is only one way to get TT or tt and 2 ways to get Tt