Quick Answer: Which if the following is homozygous dominant genotype?

Is homozygous AA or AA?

A homozygous genotype means that you have two of the same alleles, which are represented by the letters A or a. So if an individual has AA or aa, we say they are homozygous.

What are homozygous dominant?

Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.

Is HH a homozygous dominant genotype?

Three genotypes are possible after a monohybrid cross, HH, Hh, and hh. Genotype HH indicates homozygous dominant trait for tall height, hh indicates homozygous recessive for short height, and Hh is for heterozygous dominant for tall.

What are examples of homozygous genotypes?

A homozygous genotype can appear in various ways, such as:

  • Eye color. The brown eye color allele is dominant over the blue eye allele. …
  • Freckles. Freckles are tiny brown spots on the skin. …
  • Hair color. Red hair is a recessive trait.

Is homozygous dominant AA?

Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.

THIS IS IMPORTANT:  Does mitosis lead to meiosis?

What is a homozygous recessive genotype?

A homozygous recessive allele combination contains two recessive alleles and expresses the recessive phenotype. … A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape.

What is a dominant genotype?

= Dominant refers to the relationship between two versions of a gene. Individuals receive two versions of each gene, known as alleles, from each parent. If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

What letters are homozygous dominant?

A homozygous trait is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.

Is MM homozygous dominant?

Homozygous genotypes have either all dominant alleles (all capital letters) or all recessive alleles (all lowercase letters). TT, YY, PP, MM, QQ, qq, mm, tt.

Is HH heterozygous or homozygous dominant?

Individuals with dominant phenotypes can be either homozygous (HH) or heterozygous (Hh). When a recessive (hh) is selected against, a reservoir of recessive alleles remains in the heterozygotes (Hh) of the dominant phenotype.

Is heterozygous hh or HH?

Dominant alleles are written as a capital letter (H), and recessive alleles as a small (lower case) version (h) of the same letter. whereas one with two different forms (Hh) is called heterozygous (a heterozygote) – also called a hybrid.

What is heterozygous dominant example?

One such example is brown eyes (which is dominant) and blue eyes (which is recessive). If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes.

THIS IS IMPORTANT:  Quick Answer: Can alleles be eliminated?