Relative allele frequency is the percentage of all copies of a certain gene in a population that carry a specific allele. This is an accurate measurement of the amount of genetic variation in a ...

Aa Aa Aa Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population ...

If PKU carriers were most likely to have children than non-carriers because of the protective effects of the PKU gene, over time, the disease-causing allele would increase the population.

Have you ever wondered why some people cannot stand bitter foods like kale, broccoli, black coffee or dark chocolate, while ...

This gene makes people sensitive to some bitter chemicals, such as phenylthiocarbamide (PTC) and propylthiouracil (PROP).

The height of pea plants is controlled by a single gene which has two alleles: tall and short. The tall allele is dominant and is shown as T. The small allele is recessive and is shown as t.

A gene known as HbS was the center of a medical and evolutionary detective story that began in the middle 1940s in Africa. Doctors noticed that patients who had sickle cell anemia, a serious ...

A new study has identified pathogenic variants in WNT9B as significant risk factors for hereditary prostate cancer. Read more ...