Pseudoalleles are

Two closely placed genes with nearly similar expression

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Forms of same allele

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Mutations in different genes producing alleles with similar effect

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Alleles producing similar effect under changed conditions.

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Solution

The correct option is A Two closely placed genes with nearly similar expression

A state in which two genes with similar functions are located so close to one another on a chromosome that they are genetically linked. This means that the two genes are nearly always inherited together.
So, the correct option is ‘Two closely placed genes with nearly similar expressions’.

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