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Biology: Chapter 9.1

Chapter 9.1 Vocabulary

TermDefinition
Genetics the field of biology devoted to understanding how characteristics are transmitted from parents to offspring
Heredity the transmission of characteristics from parents to offspring
Trait a genetically determined variant of a characteristic, such as a yellow flower color
Pollination occurs when pollen grains produced in the male reproductive parts of a flower, called the anthers, are transferred to the female reproductive part of a flower, called the stigma
Self-Pollination occurs 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 flowers of two plants
True-Breeding pure; will always produce offspring with the trait when they self-pollinate
P Generation the true-breeding parents of the first generation
F1 Generation the offspring of the P generation, the first filial generation
F2 Generation the offspring of the F1 generation, the second filial generation
Dominant masked, or dominated the factor for the other trait in the characteristic
Recessive a trait controlled by *this* has no observable effect on an organism's appearance when that trait was paired with a trait controlled by a dominant factor
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: truongm19