If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.
Are alleles always dominant or recessive?
Different versions of a gene are called alleles . Alleles can be considered dominant or recessive, with dominant being the trait that is observed or shown and recessive being the trait is not seen. Dominant alleles are seen as an uppercase of a letter; for example, B.
Are purebred alleles dominant?
An offspring may inherit two alleles for the same form of a trait or two different alleles. When two alleles are present, the form of the dominant allele appears. A dominant allele is the one that occurs most often. … An organism that has two identical (same) alleles for a trait is called a purebred.
Are blue eyes dominant or recessive?
Blue will always be recessive. If both parents have a blue allele, it is likely that the child will have blue eyes. However, if one parent has green eyes and the other blue, your child will most likely have green eyes, as green is dominant over blue.
Is anyone dominant for every trait?
No organism has all dominant or all recessive genes. An organism may be pure in certain traits and hybrid others. Remember, that a dominant trait in one kind of organism may be a recessive trait in another organism. 1.
Is height a dominant gene?
Genes aren’t the sole predictor of a person’s height. In some instances, a child might be much taller than their parents and other relatives. Or, perhaps, they may be much shorter. Such key differences may be explained by other factors outside of your genes that contribute to height.