Q.

Read the following table and choose the incorrectly matched one regarding F2 generation in dihybrid cross.

 

Kind of genotype

Observed in dominant phenotype

Recessive phenotype

(1)

Double homozygous genotype

(2)

Parental genotype

(3)

Double heterozygous genotype

(4)

Single homozygous genotype

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a

2

b

1

c

3

d

4

answer is C.

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Detailed Solution

In recessive phenotype genotype is only double homozygous. Recessive character cannot be expressed in heterozygous condition.

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