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Question

Match the genetic phenomena with their respective ratios

A.Inhibitory gene ratio19 : 3 : 4B.Complementary gene ratio21:1:1:1C.Recessive epistasis ration312:3:1DDihybrid test cross ratio412:3E.Dominant epistasis ratio59:7


A

a – 5, b–4, c–3, d–2, e–1

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B

a–4, b–5, c–1, d–2, e–3

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C

a –1, b–2, c–4, d–3, e–5

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D

a–2, b–1, c–4, d–5, e–3

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Solution

The correct option is B

a–4, b–5, c–1, d–2, e–3


Inhibitory gene ratio – 12 : 3

Complementary gene ratio – 9 : 7

Recessive epistasis ratio - 9 : 3 : 4

Di-hybrid test cross ratio - 1 : 1 : 1 : 1

Dominant epistasis ratio – 12 : 3 : 1


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