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3 votes
Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are heterozygous (Bb)?

A) BB only
B) bb only
C) BB and bb
D) BB, Bb, and bb

asked
User Aif
by
7.9k points

1 Answer

3 votes

Final answer:

The possible genotypes resulting from a cross between two individuals that are heterozygous (Bb) include BB, Bb, and bb, with expected phenotypic ratios of 3:1 for the dominant to recessive phenotype. The correct option is D) BB, Bb, and bb

Step-by-step explanation:

When two heterozygous individuals with genotype Bb are crossed, the possible genotypes of their offspring can be determined using a Punnett square. In such a cross, both parents can produce gametes with either the dominant allele B or the recessive allele b. When these gametes combine, the resulting genotypes can be BB, Bb, or bb. A typical Mendelian cross between Bb and Bb shows that there is a 25% chance for BB, a 25% chance for bb, and a 50% chance for Bb, resulting in an expected phenotypic ratio of approximately 3:1 for the dominant to recessive phenotype.

The correct answer to the question "Which of the following represents the possible genotype(s) resulting from a cross between two individuals that are heterozygous (Bb)?" would be D) BB, Bb, and bb. The correct option is D) BB, Bb, and bb

answered
User Xantix
by
7.5k points
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