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Dihybrid Cross

If parents ha...

Question

If parents have free ear lobes and the offspring has attached ear lobes, then the parents must be

A

Homozygous

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B

Heterozygous

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C

Co-dominant

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D

Nullizygous

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Solution

The correct option is D Heterozygous
Recessive traits are those that will express only in homozygous condition. Attached earlobes is a recessive trait. Since both, the parents have free earlobes and the offspring has attached earlobes the parents will be heterozygous of the trait. Thus, the correct answer is option B.

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