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Genetics Intro
Genetics up to Punnett Squares
| Question | Answer |
|---|---|
| The passing of traits from parents to offspring | heredity |
| characteristic that is passed from parents to offspring (Ex. blue eyes) | trait |
| different form of a gene | allele |
| thread-like or X-shaped structure that is made of many genes ; holds genetic information | chromosome |
| piece of DNA that codes for a specific trait/protein | gene |
| alleles that are the same for a trait [BB or bb] | homozygous alleles |
| alleles that are different for a trait [Bb] | heterozygous alleles |
| allele that only needs 1 upper cased letter to show the trait | dominant allele |
| allele that needs 2 lower cased letters to show the trait | recessive allele |
| physical appearance | phenotype |
| genetic makeup | genotype |
| chart used to predict the genotype and phenotype of offspring | Punnett Square |
| cell organelle where chromosomes/DNA is kept | nucleus |
| pattern of heredity where there are only 2 possible traits Example: tall or short | Complete Dominance |
| pattern of heredity where the heterozygote is a mix of 2 traits (Red x white = pink) | Incomplete Dominance |
| pattern of heredity where the heterozygote expresses both traits equally (Red x white = red and white) | Co-Dominance |
| trait where males are MOST affected because they have XY genotype (ex. hemophilia and color-blindness) | Sex-linked (X-linked) |
| Person that appears normal but can pass the recessive trait on to their offspring | Carrier |
Created by:
cadetjt
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