Question

How can you tell if a trait is dominant or recessive?

Answer 1

Genetics:

1. Genetics is the study of inheritance and encompasses several overlapping fields, including biochemical genetics, cytogenetics, population genetics, genomics, developmental genetics, clinical genetics, classical genetics, and molecular genetic.
2. Genes are the determinants of most human-inherited traits.

Dominant trait:

1. The dominant trait is the one that is the first to appear or express itself visibly in the organism.
2. Example: In human beings, we observe V-shaped hairline, Almond-shaped eyes, Right handedness, Detached earlobes, etc.
3. Dominant traits are always expressed when the connected allele is dominant, even if only one copy of the dominant trait exists.
4. The dominant allele is denoted by capital letters, such as A versus a.
5. Each parent contributes one allele, resulting in the following combinations: AA, Aa, and aa. - Offspring with the genotypes AA and Aa will have the dominant trait, whereas aa offspring will have the recessive trait.

Recessive trait:

1. The trait that exists at the gene level but is masked and does not show itself in the organism is called the recessive trait.
2. Recessive traits are expressed only if the connected alleles are recessive.
3. Example: In human beings, we observe Straight hairline, Round eyes, Left-handedness, Attached earlobes, etc.