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Q.

Match the following in Column I with their description in Column II and choose the correct option.

 

Column-I

 

Column - II

a

Dominance

i

Many genes govern a single character

b

Codominance

ii

In a heterozygous organism, only one allele expresses itself

c

Pleiotropy

iii

In a heterozygous organism, both alleles express themselves fully

d

Polygenic inheritance

iv

A single gene influences many characters

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a

a – iii, b – ii, c – iv, d - i

b

a – ii, b – iii, c – iv, d - i

c

a – ii, b – i, c – iv, d - iii

d

a – iv, b – iii, c – ii, d – i

answer is B.

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Detailed Solution

Dominance

In a heterozygous organism, only one allele expresses itself 

Codominance

In a heterozygous organism, both alleles express themselves fully

Pleiotropy

A single gene influences many characters 

Polygenic inheritance

Many genes govern a single character 

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