Which genotype would be used to indicate an individual that has no recessive alleles?

Rationale

AABB is the genotype that indicates an individual with no recessive alleles.

This genotype consists entirely of dominant alleles, meaning that there are no recessive alleles present. As a result, individuals with the AABB genotype will express the dominant traits associated with both genes represented.

A (AAbb) YOUR ANSWER

This genotype contains one recessive allele (bb), indicating that the individual has a recessive trait for the second gene. Thus, it cannot be used to represent an individual with no recessive alleles.

B (aaBB) YOUR ANSWER

In this case, the genotype has two recessive alleles (aa) for the first gene. The presence of these recessive alleles means that this individual expresses the recessive trait for that gene, disqualifying it from representing an individual without recessive alleles.

C (aabb) YOUR ANSWER

This genotype has both genes represented by recessive alleles (aa and bb). An individual with this genotype would express recessive traits for both genes, clearly indicating the presence of recessive alleles.

D (AABB) CORRECT

This genotype features only dominant alleles (AA and BB), signifying that there are no recessive alleles present. Individuals with the AABB genotype will express the dominant traits for both genes, making it the correct designation for someone with no recessive alleles.

Conclusion

In genetics, the presence or absence of recessive alleles is crucial for determining phenotypic expression. The AABB genotype uniquely represents an individual devoid of recessive alleles, while the other options include at least one recessive allele that influences the traits expressed. Understanding these genetic combinations is essential for predicting inheritance patterns and trait expression in offspring.

Which genotype would be used to indicate an individual that has no recessive alleles?

AABB is the genotype that indicates an individual with no recessive alleles.

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