# What is the probability of the A allele in a parent who is AA genotype?

## What is the probability of the A allele in a parent who is AA genotype?

The frequency of the “aa” genotype. Answer: 36%, as given in the problem itself. The frequency of the “a” allele. Answer: The frequency of aa is 36%, which means that q2 = 0.36, by definition.

## Is aa dominant or recessive?

For this example, let us define “A” as being the dominant normal allele and “a” as the recessive abnormal one that is responsible for cystic fibrosis. As carriers, you and your mate are both heterozygous (Aa). This disease only afflicts those who are homozygous recessive (aa).

What is an AA gene?

A homozygous dominant (AA) individual has a normal phenotype and no risk of abnormal offspring. A homozygous recessive individual has an abnormal phenotype and is guaranteed to pass the abnormal gene onto offspring.

### Which is phenotype ratio is expected from the resulting offspring?

In a cross of two tall heterozygous plants, which phenotype ratio is expected from the resulting offspring? At the end of your biology class, your professor asks you to develop a project to determine the genotype of a plant with red flowers. Red petal color (R) is dominant to pink flower color (r).

### When is neither gene in a genotype pair is dominant?

When neither gene in a genotype pair is dominant and neither gene is recessive, the genes are said to be _____. In considering the cross YyRr x YyRr, the genotype ratio is YYRR:2YYRr:2Yyrr:4YyRr:YYrr:2YyRR:yyRR:yyRr:yyrr. In considering the cross YyRr x YyRr, the phenotype ratios of the F2 generation will be _____.

What are the probable genotypes of monohybrid snapdragons?

If the alleles are designated R (red seeds) and r (white seeds), what are the probable genotypes of the snapdragons in your garden? Suppose you have monohybrid snapdragons in your garden and you find that they produce red seeds to white seeds in the ratio of 3:1.

## What was the phenotype of the F1 generation?

In a dihybrid cross, round (RR), yellow (YY) seeds were crossed with wrinkled (rr), green (yy) seeds. What were the phenotypes of the F1 generation? Someone who has the blood type AB had parents with _____ genes. The principle of _____ suggests that a plant with the genotype Tt will display a tall phenotype.