If a plant has a genotype of Aa, we would assume which is true?

1. The a allele is the wild‑type allele for this plant species.

2. The plant has round seeds.

3. This plant had to have one parent of AA genotype and one parent of aa genotype.

4. The A allele is dominant to the a allele.

5. The a allele is dominant to the A allele.

Question

Biology

Figgy

7 June, 16:55

If a plant has a genotype of Aa, we would assume which is true?

1. The a allele is the wild‑type allele for this plant species.

2. The plant has round seeds.

3. This plant had to have one parent of AA genotype and one parent of aa genotype.

4. The A allele is dominant to the a allele.

5. The a allele is dominant to the A allele.

+4

Answers (1)

Know the Answer?

Matias Decker · Answer 1

4. The A allele is dominant to the a allele.

Explanation:

In genetics, the dominant allele which is expressed when present in single or two copies is always written with an upper case letter. The corresponding allele whose expression is prevented in the presence of the dominant allele is written in the "lower case letter". This is called recessive allele. In the given genotype, one copy of "A" and one copy of "a" is present. This means that the allele written with upper case letter "A" is dominant over the allele "a". Nothing can be said about the genetic trait regulated by these two alleles of a gene.