Biology
Grade-10
Easy
Question
What genotypes of future children are feasible when a heterozygous tall pea plant crosses with a short pea plant?
- 100% Tt
- 50% Tt, 50% tt
- 75%Tt, 25%tt
- 25%TT, 50%Tt, 25%tt
Hint:
50% Tt, 50% tt
The correct answer is: 50% Tt, 50% tt
In a cross between a heterozygous tall plant (Tt) and a homozygous dwarf plant (tt), the ratio in the offspring shall be 1 tall : 1 dwarf. This is because the heterozygous plant will make two types of gametes, one type having T allele and the other having t allele.
Hence, the correct answer 50% Tt, 50% tt
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