words of genetics and what they mean!
Phenotype- the composite of an organism's observable characteristics or traits. these characteristics can be any thing from the color of your hair to the shape of your thumb.
Homozygous- having identical pairs of genes for any given pair of hereditary characteristics. examples for homozygous pairs are XX, yy, tt.
Heterozygous- having dissimilar pairs of genes for any hereditary characteristic. heterozygous pairs can look like these sets, Tt, Yy, Xx.
An allele in a gene that is shown over the recessive allele. An example of this is a widows peak. Widows peaks are a dominant trait so they show over non widows peaks.
An allele in a gene that is hidden under a dominate gene unless there are no dominate genes. An example is blonde hair to brown hair. Blonde hair is a recessive trait therefore, if you have blonde hair you have two lower case alleles in your hair color gene.