Question

difference between homozygous and heterozygous ​

Answer 1

Homozygous:

• Homozygous consists of two copies of the same allele that codes for a particular trait.
• Consist of either dominant or recessive allele pairs but not both.
• Self-breeding results in the same traits over generations.
• Produces a single gamete.
• The two types of homozygous alleles are homozygous-dominant and homozygous-recessive.

Heterozygous:

• Heterozygous consists of two different copies of alleles that code for a particular trait.
• Consist of both dominant and recessive allele pairs.
• Self-breeding results in the combination of traits.
• Produces two types of gametes.
• The three types of heterozygous alleles complete dominance, incomplete dominance, and codominance

Answer 2

ANSWER :-

Homozygous and Heterozygous are the two of the few types of genotypic combinations that are studied under the topics related to genetics.

The differences between these terms are listed below-

Homozygous :-

• Homozygous combinations of genes constitute genotypes that are made up of wild, original, non mutated, dominant genes only.
• Homozygous combinations are found in the progeny that are produced as a result of pure breeding or true breeding or genetic selfing of pure-line parents.
• The progeny produced through pure breeding are referred to as "Pure-line individuals".
• Examples of homozygous combinations are as follows-

1. In the context of height, TT (Homozygous tall) and tt (Homozygous dwarf).
2. In the context of colour of flowers, RR (Homozygous red) WW (Homozygous white).

Heterozygous :-

• Heterozygous combinations of genes constitute of genotypes that are made up of a mixture of both, wild, original, non mutated, dominant genes, and mutated, recessive genes.
• Heterozygous combinations are found in the progeny that are produced as a result of impure breeding or genetic crossing of pure-line parents.
• Only the wild, original, non mutated, dominant allele is able to express itself in phenotypes of such genotypic combinations.
• Examples of heterozygous combinations are as follows-

1. In the context of height, Tt (Heterozygous tall), heterozygous combinations can never produce dwarf plants.
2. In the context of eye colour Bb (Brown eyes), heterozygous combinations can never produce blue eyes.