What is a dominant allele?

An allele that has the same effect on the phenotype whether it is present in homozygous or heterozygous state. Dominant alleles mask the effect of recessive alleles. 

MR

Related Biology IB answers

All answers ▸

Steve, a novice gardener, plants sunflower seeds into small pots. He does not water them and is upset that they have not grown a week later. Explain why water is needed for the germination of a seed and what other conditions are required also and why


What is a test cross (Genetics)?


Explain the first stages of aerobic respiration that occur before the Krebs cycle.


Translation occurs in living cells. Explain how translation is carried out, from the initiation stage onwards.