Single Choice

In a cross between a pure tall plant with green pod and a pure short plant with yellow pod, how many short plants are produced in $$F_2$$ generation out of 16?

A1
B3
C4
Correct Answer
D9

Solution

Genotype of pure tall plant with green pod= TTGG
Genotype of pure dwarf plant with yellow pod= ttgg
P generation: TTGG X ttgg
F1 generation: TtGg(tall plant, green pod)
Selfing: TtGg X TtGg


TG(1/4) Tg(1/4) tG(1/4) tg(1/4)
TG(1/4) TTGG TTGg TtGG TtGg
Tg(1/4) TTGg TTgg TtGg Ttgg
tG(1/4) TtGG TtGg ttGG ttGg
tg(1/4) TtGg Ttgg ttGg ttgg

As can be seen from the table total 4 short plants with genotypes ttGG, ttGg, ttGg and ttgg are produced.

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