Is it true that there are no alleles in homozygotes, and there are alleles in heterozygotes

Alleles: genes that are located in the same position on the homologous chromosome and control relative traits. Simply put, it is a gene that is in the same position of the homologous chromosome, which is uppercase and lowercase.

Such as A and A, B and B, and so on. Homologous chromosomes in homozygotes are all genetics of the same position at the same position, such as a and a, a and a, etc., so there are no alleles. And the so-called heterozygous is one that contains alleles.

So this sentence is no problem, it is true.

I think that's right. Because an allele refers to a pair of genes that determine the relative traits of an organism at the same location on the same chromosome. For example, if tall and short are relative traits, the genotype is expressed as AA (A for tall and A for short).

Homozygous (genotype AA or AA) does not indicate an allele but is called the same gene.

No, there are alleles in both homozygous heterozygosity, and of course, if it is haploid, there is no allele.

Heterozygous with a pair of alleles inbred n times from generation to generation, then the proportion of heterozygotes in the fn generation is 1 2n, and the proportion of homozygous is 1-1 2n (n are all superscripts).

There are homologous chromosomes in somatic cells, and genes in the same position on a pair of homologous chromosomes are alleles. Alleles generally control a trait. Curly and straight hairs, for example, are different manifestations of the same trait (hair shape).

If it is denoted by a and a, the allele is aa or aa is pure, and aa is heterozygous.

To put it another way. It is to have two different alleles at one locus.

For example, if a gene has two alleles, A and A, if an individual genotype is Aa and has both alleles A and A, it is called allele heterozygous.

7 8 Heterozygous with a pair of alleles inbred n times from generation to generation, then the proportion of heterozygous in the fn generation is 1 2n, and the proportion of homozygous is 1-1 2n (n are all superscripts).

After the inbred n generation of AA, the ratio of heterozygotes is 1 2 to the nth power, and the proportion of homozygotes is the difference between 1 and 1 2 to the nth power.

How to say it, that is, 1-1 2 to the nth power".

Do the math, n is at least 5 times.

An allele is a pair of genes located on a pair of homologous chromosomes (one from the father and one from the mother, with basically the same morphological size), and the same position controls the relative trait (different types of expression of the same trait in the same organism). For example, a and a are alleles, and a and a are not alleles.

Heterozygotes that control a pair of alleles are expressed as AABB, AABB (because only one pair of alleles is heterozygous, the other pair is homozygous).

Like aabbcc is allele homozygous, like aabbcc is allele heterozygous, allele is two corresponding uppercase and lowercase letters.

Homozygous does not contain alleles.

Analysis: Alleles refer to a pair of genes on the homologous chromosome that control relative traits at the same location, such as d and d are alleles.

Homozygous genes such as dd or both genes in dd either control dominance or recessiveness rather than relative traits.

Yes, no. Alleles are genes that control a pair of relatively dislike traits and have different manifestations. d-d is the allele base of the rapid return to Qin Changqing; DD and DD are not alleles, but the same gene.

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