Question

A pure-breeding plant with smooth stems was crossed with a heterozygous plant with hairy
stems.
What will be the ratio of hairy : smooth stems in the resulting plants?
A 1 hairy : 1 smooth
B 1 hairy : 3 smooth
C 3 hairy : 1 smooth
D all hairy

can you please answer this.

Answer 1

Answer:

1 hairy : 1 smooth

Explanation:

•• if heterozygous condition produces hairy stem, it means hairy stem is a dominant character.

now, let it's genotype by "Aa"

•• if pure breeding plant produces smooth stem, it means it is a receive homozygous condition, infered from 2nd statement.

now, let the genotype be "aa"

•• now, cross these two and the result will be --> Aa * aa = Aa, Aa, aa, aa

•• Hence, two Are smooth and two hairy.... so, answer is option 1