Dominance

Dominance in genetics is a property of genes that determines what traits will appear in the offspring. A dominant gene is a gene that expresses itself independently of other genes in the genome. For example, if a person has a dominant gene that determines eye color, then no matter what gene the other parent has, the child will have blue eyes.

However, not all genes are dominant. Some genes may be recessive and only appear if they are paired with a dominant gene. A recessive gene is a gene whose expression depends on the presence of a dominant gene in its pair. For example, if a person has a recessive gene that determines the presence of freckles on the skin, then he will not have freckles even if the other parent has the dominant gene.

Dominance can be defined as a property of a gene that indicates its ability to control the expression of another gene. Dominant genes take precedence over recessive genes and are usually expressed in offspring. However, if a recessive gene is paired with a dominant one, then it can manifest its property.

A person’s genotype can contain both dominant and recessive genes. To determine which genes are dominant, genetic analysis must be performed. This will help determine what properties a person will exhibit and what precautions should be taken to prevent hereditary diseases.

Thus, dominance is an important concept in genetics, which helps determine which traits and properties will be expressed in offspring and how they can be passed on from parents to children. Genetic testing can help identify dominant and recessive genes, which can be useful for maintaining health and preventing inherited diseases.