OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the expected genotypic ratio resulting from a heterozygous x heterozygous monohybrid cross?
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1:2:1
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1:3:1
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1:2
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1:0
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Explanation:
Detailed explanation-1: -The expected genotype ratio when two heterozygotes are crossed is 1 (homozygous dominant) : 2 (heterozygous) : 1 (homozygous recessive).
Detailed explanation-2: -Out of the four types of individuals of the F2 progeny-one is homozygous dominant (TT), two are heterozygous dominant (Tt) and one is homozygous recessive (tt). Thus the F2 genotypic ratio of Mendel’s monohybrid cross is 1:2:1.
Detailed explanation-3: -Final answer: The genotypic and phenotypic ratio of the monohybrid test cross is 1:1.
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