For example, the two chromosomes located at pair number one in a human karyotype are homologous chromosomes. The term homozygous in genetics refers to the situation where two genes or alleles for a particular trait are the same on a pair of homologous chromosomes.
Are homologous chromosomes heterozygous?
A homozygous trait is when the same kind of two alleles associate to form a trait. A heterozygous is a trait when different kinds of two alleles associate to form a trait. … The homologous pairs of chromosomes consist of either same alleles (both black or brown) or different alleles (black and brown).
Is homologous and diploid the same?
All cells have homologous chromosomes except for the reproductive cells of higher organisms. Cells with homologous chromosomes are diploid. … They contain only half the full number of chromosomes—one chromosome from each pair. These cells are haploid.
Is QQ heterozygous or homozygous?
Homozygous genotypes have either all dominant alleles (all capital letters) or all recessive alleles (all lowercase letters). TT, YY, PP, MM, QQ, qq, mm, tt. 13) In this list of genotypes, which ones are examples of HETEROZYGOUS genotypes? TT, Tt, YY, Hh, Ll, Pp, PP, MM, Nn, Rr, Qq, QQ, qq, mm, tt.
Are humans homozygous or heterozygous?
Since humans possess two copies of each chromosome, they also have two copies of each gene and locus on those chromosomes. Each of these trait-encoding genes (or loci) is called an allele. … If the alleles are different, the person is heterozygous for that trait.
What do you mean by homologous and heterologous?
The two chromosomes of a pair are called homologous chromosomes which contain same genes located in the same places. A heterologous chromosome is a chromosome that contains different set of genes for a given trait. Homozygous means that the organism has two copies of the same allele for a gene.
Is homozygous purebred?
Purebred – Also called HOMOZYGOUS and consists of gene pairs with genes that are the SAME. Hybrid – Also called HETEROZYGOUS and consists of gene pairs that are DIFFERENT. Genotype is the actual GENE makeup represented by LETTERS.
What is an example of homozygous?
You can have brown eyes whether you’re homozygous (two alleles for brown eyes) or heterozygous (one for brown and one for blue). This is unlike the allele for blue eyes, which is recessive. You need two identical blue eye alleles in order to have blue eyes.