When two alleles of a pair are different the one that is?

Each pair of alleles represents the genotype of a specific gene. Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ.

What is it called when two alleles are different?

An individual inherits two alleles for each gene, one from each parent. … If the alleles are different, the individual is heterozygous. Though the term allele was originally used to describe variation among genes, it now also refers to variation among non-coding DNA sequences.

When two alleles of a pair are different the one that is masked?


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 is a mismatched pair of alleles called?

The alleles that make up the genes of an organism, known collectively as a genotype, exist in pairs that are identical, known as homozygous, or mismatched, known as heterozygous.

When two alleles of a pair differ the one that determines appearances?

When an organism has two different alleles of a gene, one (the dominant allele) will hide the presence of the other (the recessive allele) and determine appearance.

THIS IS INTERESTING:  What is the mother's genotype quizlet?

What do multiple alleles mean?

: an allele of a genetic locus having more than two allelic forms within a population.

What is the best definition of allele?

Allele, also called allelomorph, any one of two or more genes that may occur alternatively at a given site (locus) on a chromosome. Alleles may occur in pairs, or there may be multiple alleles affecting the expression (phenotype) of a particular trait.

Why do red and white flower alleles can interact with one another?

We can equivalently say that the white allele for flower color is recessive to the red flower-color allele. This means that if a pea plant has two red alleles, its flowers will be red. If it has to white alleles, its flowers will be white. And, if it has a red allele and a white allele, its flowers will be red.

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.

All about hereditary diseases