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ch.3 genetics
Evangeline Miles
| Term | Definition |
|---|---|
| hereditary | the passing of traits from parents to off spring |
| trait | a specific characteristic that an organism can pass to its offspring through its genes |
| genetics | the scientific study of heredity |
| fertilization | the process in sexual reproduction I n which an egg and a sperm cell join to form a new cell |
| purebread | an offspring of many generations that has the same form of a trait |
| gene | a sequence of DNA that demonstrates a trait and is passed from parent to offspring |
| allele | the different forms of a gene |
| dominant allele | an allele whose trait always shows up in the organism when the allele is present |
| recessive allele | an allele that is hidden whenever the dominant allele is present |
| hybrid | an offspring of crosses that has two different allele for a trait |
| probability | a number that describes how likely it is that a particular event will occur |
| Punnett square | a chart that shows all the possible combination of alleles that can result from a genetic cross |
| phenotype | an organisms physical appearance or visible traits |
| genotype | an organisms genetic makeup, or allele combination |
| homozygous | having two identical alleles for a particular gene |
| heterozygous | having to different alleles for a particular gene |
Created by:
emiles043