Aand a, are dominant and recessive alleles, respectively, of the same gene. which genotype(s) in homozygous and heterozygous combinations would result in an individual with the dominant phenotype?

Describe how alleles and genes are related

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

In the presence of oxygen, glycolysis is followed a. the krebs cycle b. lactic acid fermentation c. alcoholic fermentation d. photosynthesis