What is the recessive phenotype body color for fruit flies?

What body color is dominant in fruit flies?

In fruit flies, gray body color is dominant over black body color. White eyes are dominant over red eyes.

Is BB recessive phenotype?

In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb. Of these three genotypes, only bb, the homozygous recessive genotype, will produce a phenotype of blue eyes.

What does a recessive phenotype look like?

For example, if both genes code for blue eyes, the offspring will have blue eyes. If, however, the two genes carry different variations for the trait, the phenotype will be determined by the dominant gene. For example, the gene for brown eyes is dominant while the gene for blue eyes is recessive.

Is yellow body dominant or recessive?

Red eye color (w+) is dominant to white eye color (w), and tan body color (y+) is dominant to yellow body color (y).

Is YY yellow or blue?

Yy is the heterozygous genotype (one dominant allele, one recessive allele). The phenotype of this genotype is yellow seed color. yy is the homozygous dominant genotype (2 y alleles). The phenotype of this genotype is green seed color.

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Is B dominant or recessive?

Everyone has an ABO blood type (A, B, AB, or O) and an Rh factor (positive or negative). Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive.

Is DD homozygous or heterozygous?

Sally’s genotype is “dd”, so she is also considered homozygous. Susan’s genotype is “Dd”, so she is considered HETEROZYGOUS (has two different alleles for a specific gene). Although Susan has both the allele “D” to make dimples and the allele “d” in her genotype, her phenotype is the presence of dimples.

What phenotypes are recessive?

Recessive phenotypes are basically versions of certain phenotypes that are masked . You can inherit the alleles for them, but they are not expressed unless you have only that allele. Some examples of this would be the diseases Sickle-cell anemia and Cystic Fibrosis.

What’s recessive phenotype?

Definition. A phenotype that requires two copies of the causal variant in an individual to occur.

What is the recessive phenotype biology?

Refers to a trait that is expressed only when genotype is homozygous; a trait that tends to be masked by other inherited traits, yet persists in a population among heterozygous genotypes.