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Chapter 9
Section 1: Mendal's Legacy
| Term | Definition |
|---|---|
| Genetics | The field of biology devoted to understanding how characteristics are transmitted from parents to offspring |
| Heredity | The transmission of characteristics from parent to offspring |
| Trait | A genetically determined variant of a characteristic |
| Pollination | When a pollen grain produced in the male reproductive parts of a flower are transferred to the female parts |
| Self-Pollination | When pollen is transferred from the anthers of a flower to the stigma of either that flower or another flower on the same plant |
| Cross-Pollination | Occurs between the flowers of two plants |
| True-Breeding | Always produce offspring with that trait when self-pollination occurs |
| P Generation | The true-breeding parents |
| F1 Generation | The offspring of the P generation |
| F2 Generation | The offspring of the F1 generation |
| Dominant | Describes the allele that is fully expressed when carried by only one of a pair of homologous chromosomes |
| Recessive | Describes a trait or an allele that is expressed only when two recessive alleles for the same characteristic are inherited |
| Law of Segregation | States that a pair of factors is segregated, or separated, during the formation of gametes |
| Law of Independent Assortment | States that factors separate independently of one another during the formation of gametes |
| Molecular Genetics | The study of the structure and function of chromosomes and genes |
| Allele | Each of two or more alternative forms of a gene |
Created by:
McLeanE18
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