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Question

How many types of gametes are produced by the parents of Mendel’s monohybrid F2 progeny?


A

One

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B

Three

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C

Two

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D

Four

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Solution

The correct option is C

Two


Mendel’s monohybrid F1 plants are all heterozygous. They possess both the dominant and recessive alleles of the respective gene. Hence they produce two types of gametes. For example, in a monohybrid cross of plant height (pure tall plant (TT) crossed with pure dwarf plant (tt) ), the F1 plants will have the genotype (Tt) (heterozygous plants having one dominant and one recessive allele). The F1 will produce two gametes, one with the dominant allele (T), and other gamete containing the recessive allele (t).


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