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What is the zygosity of the F1 progeny of a dihybrid cross?

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in Biology – Class 12 by (271k points)
What is the zygosity of the F1 progeny of a dihybrid cross?

(a) Homozygosity

(b) Heterozygosity

(c) Hemizygostiy

(d) Nullizygosity

The question was asked in an online quiz.

Enquiry is from Inheritance of Two Genes-1 topic in chapter Principles of Inheritance and Variation of Biology – Class 12

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Right choice is (b) Heterozygosity

Explanation: The F1 progeny of a dihybrid cross are formed by a cross between parents that are homozygous for two traits. Thus, they are all heterozygous.

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