When two alleles are the same and dominant this is *?

An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.

What is it called when the alleles are the same and dominant?

If both alleles are dominant, it is called codominance?. The resulting characteristic is due to both alleles being expressed equally. An example of this is the blood group AB which is the result of codominance of the A and B dominant alleles.

When 2 alleles are both dominant at the same time?

Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.

What does it mean to have multiple alleles?

Alleles are described as a variant of a gene that exists in two or more forms. Each gene is inherited in two alleles, i.e., one from each parent. Thus, this means there would also be having two different alleles for a trait. … These three or more variants for the same gene are called multiple alleles.

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What happens if you have two different dominant alleles?

A dominant allele masks the expression of the recessive gene’s trait. … The alleles are homozygous if they code for the same trait and heterozygous if they code for different traits. A homozygous pair might have two dominant or two recessive alleles.

How many alleles must be present in order for a trait to show up in the offspring?

The different forms of a gene are called alleles.

Genes/Two alleles must be present in order for a trait to show up in the offspring.

Do all humans have the same alleles?

Every person has two copies of each gene, one inherited from each parent. … Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features. Scientists keep track of genes by giving them unique names.

Why does a person only have 2 alleles?

Alleles are variants of a gene. A person has two alleles for a gene as it inherits, from each of its parents, a set of chromosomes. Consequently, there are two copies of each gene, hence two alleles encoding for the same gene. …

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