Question

Meaning of alleles, dominant, heterozygous, homozygous, and recessive?

Answer 1

alleles-one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

dominant- The dominant allele of the gene is inherently dominant,so it hides the presence of the recessive allele

heterozygous-having two different alleles of a particular gene or genes.

homozygous-a particular gene that has identical alleles on both homologous chromosomes

recessive-A recessive gene is a gene that can be masked by a dominant gene

Answer 2

Alleles: 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. Alleles are called diploid in humans.

Dominant: In genetics, dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.

Heterozygous: Zygosity is the degree to which both copies of a chromosome or gene have the same genetic sequence.

Homozygous: Homozygous is a word that refers to a particular gene that has identical alleles on both homologous chromosomes

Recessive: Recessive: A condition that appears only in individuals who have received two copies of a mutant gene.