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Question

Two genes are present on same locus of homologous chromosomes but are slightly different in their phenotypic expression. This condition called?

A
Alleles
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B
Heterozygous
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C
Homozygous
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D
Heterologous
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Solution

The correct option is A Alleles
  • Alleles are the alternative form of a gene present on homologous chromosomes. They occupy the same position on a chromosome and affect the same characteristic but in alternative ways. For example, a gene responsible for eye color can have two alleles one is for black and other is for brown.
  • Homozygous contains identical pair of genes but heterozygous contains different set of genes.
So, the correct option is 'Alleles'.

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