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.
What represents a homozygous genotype?
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. If that have Aa, they are heterozyous.
What is homozygous organism?
homozygote, an organism with identical pairs of genes (or alleles) for a specific trait. If both of the two gametes (sex cells) that fuse during fertilization carry the same form of the gene for a specific trait, the organism is said to be homozygous for that trait.
Are humans homozygous or heterozygous?
Homozygous and Heterozygous
Since humans possess two copies of each chromosome, they also have two copies of each gene and locus on those chromosomes. … If the alleles match, the person is homozygous for that trait.
What are some examples of a homozygous?
- 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.
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.
What is heterozygous and homozygous examples?
Examples of homozygous and heterozygous used in a sentence
If you have two copies of the allele for blonde hair, you are homozygous for that trait. Having one copy of the allele for blonde hair and one copy of the allele for brown hair makes you heterozygous for hair color.
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.