Question

Question 5: A tall pea plant (TT) is crossed with short pea
plant (tt)
Given: T. is the dominant allele for tall pod shape
t: is the recessive allele for short pod shape
Genotypes:
Phenotypes
Ratio:
Question 6: A cross between 2 pea plants: one with green

Answer 1

Answer:

Genotype = 1TT, 2Tt, 1tt

Ratio = 1 : 2 : 1

Phenotype = 3 tall, 1 short

Ratio = 3 : 1

Explanation:

Draw the Punnett square for the F₁ generation.

 Genotype = 100% Tt

 Phenotype = 100% tall

Next, draw the punnett square for the F₂ generation.

 Genotype = 1TT, 2Tt. 1tt

 Ratio: 1 : 2 : 1

 Phenotype = 3 tall, 1 short

 Ratio = 3 : 1