Both alleles express in heterozygote when they are _____________.

Recessive

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Lethals

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Semidominant

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Codominant.

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Solution

The correct option is D Codominant.

A.Recessive – the trait, which is not able to express is called recessive.

B.Lethals – The genes or traits, concerned in the killing of organisms.

C.Semidominant – The traits, which are partially expressed.

D.Codominant – The pair of contrasting characters able to express in heterozygous condition is called Codominant.
So, the correct option is ‘Codominant’.

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Similar questions

If both the alleles of a heterozygote show expression, the phenomenon is called

Column I	Column II
a. Dominance	1. In heterozygous condition both alleles express to create a mixed phenotype
b. Codominance	2. More than two alleles for a gene controlling a single character
c. Multiple allelism	3. Two alleles in a heterozygote create an intermediate phenotype
d. Incomplete dominance	4. In a heterozygous condition only one allele expresses itself

F_{1}

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