Sex-linked
a trait that is found in one gender more than another; contrary to autosomal traits that are found equally in both genders.
Chromosomal theory of inheritance
X-linked
Barr body
Continuous traits
traits that have a range of phenotypes, such as human height, or eye color with its many shades; is due to the polygenic effect of many genes.
Polygenic inheritance
where more than one gene (often several) are involved in determining the phenotype for one characteristic.
ex.) eye color is actually the result of multiple genes that collectively contribute to the final eye color.
Epistasis
Pleiotropy