Multiple Choice
In a monohybrid cross between two heterozygous pea plants (genotype Aa), what is the expected phenotypic ratio among the offspring if 'A' is dominant over 'a'?
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2. Mendel's Laws of Inheritance
Monohybrid Cross
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In a monohybrid cross, F2 refers to:
A
the parental generation that is initially crossed
B
the second filial generation, produced by self-fertilizing or crossing F1 individuals
C
the generation resulting from a backcross between F1 and a parent
D
the first filial generation, produced directly from the parental cross
Verified step by step guidance1
Understand the terminology used in genetics crosses: 'P' stands for the parental generation, 'F1' is the first filial generation (offspring of the parental cross), and 'F2' is the second filial generation.
Recognize that the F1 generation is produced by crossing two parental (P) individuals with different traits.
Know that the F2 generation is produced by either self-fertilizing or crossing individuals from the F1 generation.
Distinguish the F2 generation from other types of crosses, such as backcrosses, which involve crossing F1 individuals back to one of the parental types.
Conclude that the F2 generation refers specifically to the offspring resulting from the mating of F1 individuals, making it the second filial generation.
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