Suppose you observed 240 progeny that resulted from a monohybrid cross and involved genes that obeyed Mendelian inheritance, how many heterozygous progeny would you expect to observe?

Question

Biology

Donna Spence

28 September, 00:22

Suppose you observed 240 progeny that resulted from a monohybrid cross and involved genes that obeyed Mendelian inheritance, how many heterozygous progeny would you expect to observe?

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Answers (1)

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Aliana Blanchard · Answer 1

120

Explanation:

If there is a monohybrid cross that involved genes that obeyed Mendelian inheritance this means that parental generation includes two true breed parents (both homozygous but with different genotype).

If we name the gene with A:

P: AA x aa

F1: Aa Aa Aa Aa

F2: AA Aa Aa aa

Half of them will be heterozygous, it means 120.