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Chapter 1: Genetics
1.1 - 1.2 Vocabulary
| Question | Answer |
|---|---|
| allele | the other version of a gene for a characteristic |
| dominant allele | when only one of two alleles is expressed in the phenotype |
| genetics | the science of heredity |
| genotype | the alleles an individual inherits |
| heterozygote | an organism with two different alleles |
| homozygote | an organism with two alleles of the same type |
| hybrid | pollen from one plant fertilizes another plant of the same species |
| law of independent assortment | factors controlling different characteristics are inherited independently of each other |
| law of segregation | there are two factors controlling a given characteristics |
| locus | the position of a gene on a chromosome |
| phenotype | the expression of an organism genotype |
| pollen | male gametes of plants |
| pollination | the fertilization step in the sexual reproduction of plants |
| reccessive allele | the other allele that isn't expressed |
| codomiance | occurs when the both alleles are expressed equally in the phenotype of the heterozygote |
| incomplete dominance | occurs when the dominant allele is not completely dominant |
| polygenic characteristic | are controlled by more than one gene, and each gene may have two or more alleles |
| probability | the likelihood, or chance that a certain event will occur |
| punnett square | a chart that allows someone to easily determine the expected percents of different genotypes in the offspring of two parents |
Created by:
grous3
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