Question

· A heterozygous tall pea plant is crossed with a short pea plant. Show the cross and describe all
possible phenotypes and genotypes for the offspring.
Genotypic Ratio
Phenotypic Ratio:​

Answer 1

Heterozygous means two different alleles.

Let tall plant be = TS.

Let short plant be = SS.

Here, T is dominant, S is recessive

Now, draw the punnet square.

$\quad T \ \quad S \\S \boxed{\sf{\purple{TS}}}\boxed{\sf{\green{SS}}}\\S \boxed{\sf{\purple{TS}}}\boxed{\sf{\green{SS}}}$

It is so clear that half of the plants are tall and half of the plants are tall.

• Phenotype is a way to describe the traits you can see. So, Ratio of Tallness to shortness is 1 : 2.
• Genotype is the genetical traits. So, Ratio = 1 : 2 again.