What would be an example of a homozygous genotype?

What would be an example of a homozygous genotype?

With eye color, for instance, “B” stands for a brown allele and “b” stands for a blue allele. An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB.

Is AA a homozygous?

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

Is TT a homozygous genotype?

The genotype is represented by letter combinations, such as TT , Tt , and tt . When an organism has two of the same alleles for a specific gene, it is homozygous (homo- means “same”) for that gene. An organism can be either homozygous dominant ( TT ) or homozygous recessive ( tt ). The genotype expresses the phenotype.

What are heterozygous genotypes?

(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).

What is the AA genotype?

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.

What is homozygous and heterozygous?

Homozygous: You inherit the same version of the gene from each parent, so you have two matching genes. Heterozygous: You inherit a different version of a gene from each parent. They do not match.

What is heterozygous or homozygous genotype?

Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.

What is the difference between heterozygous and heterozygous?

Homozygous is a state of having two dominant alleles (AA) or two recessive alleles (aa) while heterozygous is a state of having one dominant allele and one recessive allele (Aa).

What are two different alleles for a gene?

An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous.

What does heterozygous dominant mean?

Heterozygous means that the organism has two different forms of the gene. “Hetero” is Greek for “other” or “different.”. As such, homozygous dominant means that the organism has two dominant alleles for that particular genetic trait. If an organism is homozygous recessive, then it has two recessive alleles.

What is meant by the term ‘heterozygous recessive’?

Heterozygous refers to having different alleles for a particular trait . When alleles are heterozygous in complete dominance inheritance, one allele is dominant and the other is recessive. The genotypic ratio in a heterozygous cross where both parents are heterozygous for a trait is 1:2:1.