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Mutations
| Term | Definition |
|---|---|
| gene mutations | a change in the sequence of bases in a gene; they can alter the codons on mRNA affecting the resulting protein |
| translocation | TYPE OF CHROMOSOMAL MUTATION- genetic material is exchanged between two nonhomologous chromosomes |
| deletion | TYPE OF CHROMOSOMAL MUTATION- segment of chromosome breaks off |
| inversion | TYPE OF CHROMOSOMAL MUTATION- segment of chromosome breaks off but reattaches upside down |
| variations | genotypic differences between individuals from the same gene pool |
| point mutation | genetic change involving one nucleotide; it can be silent or it can cause a change in one amino acid of the protein |
| frame shift mutation | a genetic mutation involving the addition or loss of nucleotides |
| population | a group of individuals that belong to the same species and live in the same area |
| gene pool | all the genes, including all the different alleles for each gene, that are present in a population at any one time |
| genetic drift | random change in allele frequencies that occurs in small populations |
| gene flow | movement of alleles into or out of a population due to the migration of individuals to or from the population |
| genetic equilibrium | a hypothetical condition where allele frequencies within a population do not change |
| crossing over | process in which homologous chromosomes exchange portions of their chromatids during meiosis. |
| genetic recombination | the result of crossing-over; sexually reproducing species have increased genetic variation because of gene crossover events during meiosis |