| A | B |
|---|
| phenotype | physical expression of an organism's genotype |
| genotype | combination of genes an organism has for a trait |
| genetic cross | mating organisms with contrasting phenotypes |
| mode of inheritance | dominant, recessive, sex-lined, sex-influenced, codominant, intermediate |
| autosomal | located on chromosomes other than the X or Y |
| X-linked | sex-linked traits that are found on the X chromosome |
| dominant | a trait that masks the recessive trait by producing protein correctly, like brown eyes |
| recessive | trait that does not show in hybrids because it is a broken gene, like blue eyes |
| pedigree | a family tree showing the occurence of a single trait in a family |
| recombination | new combinations of genes due to crossing-over or independent assortment during meiosis |
| loci | locations of genes on chromosomes |
| genetic map | a diagram of the sequence of genes on a chromosome |
| sex-linked trait | located on the X or Y chromosomes, like color-blindness |
| sex-influenced trait | located on autosomes but expressed either in males or females more often, like baldness |
| codominant traits | several dominant alleles that both get expressed when together, like in AB blood |
| intermediate traits | have three phenotypes: 2 extremes & an in between (straight, curly, & wavy hair) |
| polygenic traits | have many genes and many phenotypes (like height, weight, intelligence) |
