| A | B |
|---|
| genetics | study of inheritance |
| homozygous | having the same alleles |
| heterozygous | having two different alleles |
| gene | trait located on the chromosome |
| sex-linked trait | trait located on the X or Y |
| pedigree | a chart to record the genetic past |
| phenotype | the observed trait ( what people see) |
| genotype | what your genetic code is |
| allele | alternate forms of a gene |
| Mendel | studied pea plant and came up with three laws: Law of Dominance, Law of Segregation, Law of Independent Assortment |
| pure bred | the same alleles |
| hybrid | two alleles that are different from each other |
| dominant | a trait that is expressed in a phenotype of a hybrid (represented by a capital(A) letter) |
| recessive | a trait not represented in a phenotype of a hybrid; represented by a lower case letter (a) |
| Morgan | studied the fruit fly; found that the chromosome is the means that traits are transferred from one generation to the next |
| Punetts Square | diagram used to determine genetic possibilities from various combinations |
| mutations | a spontaneous change in a gene or a chromosome |
