Which of the following is an example of a homozygous genotype?

What are homozygous genotypes?

(HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.

What is an example of a heterozygous genotype?

Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous.

Is AA homozygous recessive?

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

What is a homozygous genotype example?

A homozygous genotype is one in which both alleles are the same, and an organism with a homozygous genotype is said to be true-breeding or purebred. … For example, in pea plants, height is governed by a single gene with two alleles, in which the tall allele (T) is dominant and the short allele (t) is recessive.

Is BB a homozygous genotype?

If the two alleles inherited for a trait are the same, they are represented by two identical letters, such as BB or bb. This is called a homozygous genotype. If the two alleles are different, such as Bb, the genotype is heterozygous.

What are some examples of a homozygous?

Homozygous examples

  • Eye color. The brown eye color allele is dominant over the blue eye allele. You can have brown eyes whether you’re homozygous (two alleles for brown eyes) or heterozygous (one for brown and one for blue). …
  • Freckles. Freckles are tiny brown spots on the skin. …
  • Hair color. Red hair is a recessive trait.
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Is HH heterozygous or homozygous?

Half the possible offspring will be homozygous, HH, and half will be heterozygous, Hh.