When two alleles are the same they are?

If the two alleles are the same, the individual is homozygous for that gene. 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 the two alleles present are the same?

For a given gene, if the two chromosomes contain the same allele, they, and the organism, are homozygous with respect to that gene. If the alleles are different, they, and the organism, are heterozygous with respect to that gene.

When 2 alleles are the same the genotype is considered to be?

A particular genotype is described as homozygous if it features two identical alleles and as heterozygous if the two alleles differ.

What is different between two alleles of the same gene?

If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous.

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When both alleles are the same for a gene the condition is called?

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

Where are the two alleles that make up a genotype located?

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Do all genes have 2 alleles?

Individual humans have two alleles, or versions, of every gene. Because humans have two gene variants for each gene, we are known as diploid organisms. The greater the number of potential alleles, the more diversity in a given heritable trait.

Why do we have two alleles for each gene?

Since diploid organisms have two copies of each chromosome, they have two of each gene. Since genes come in more than one version, an organism can have two of the same alleles of a gene, or two different alleles. This is important because alleles can be dominant, recessive, or codominant to each other.

What differs between two alleles of the same gene quizlet?

What is different between two alleles of the same gene? The information they carry. For example, one allele might carry the information for blue eye pigment, while the other carries the information for brown eye pigment.

Why do alleles occur in pairs?

As chromosomes occur in pairs for each characteristic, there are two possible alleles. … The different versions of alleles occur as DNA base sequence varies. Such a combination of alleles for each characteristic is a genotype, which could be a combination of two of the available alleles.

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When two alleles are the same they are quizlet?

When an individual has two of the same allele, whether dominant or recessive, they are homozygous. Heterozygous means having one each of two different alleles.

When both the alleles for a trait are the same person is said to be that trait?

If the two alleles are identical, the individual is called homozygous for the trait; if the two alleles are different, the individual is called heterozygous. Mendel cross-bred dihybrids and found that traits were inherited independently of each other.

When both the alleles of a gene express themselves in heterozygous condition the phenomenon is called?

Codominance is a heterozygous condition in which both alleles at a gene locus are fully expressed in the phenotype.