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Biology Chapter 7

Mendel and heredity

TermDefinition
Self-pollination Way flowers fertilize themselves
Cross-pollination Transferring one plants pollen to another
True breeding All offspring would display only one form of a particular trait
P generation Parental generation
F1 generation Offspring of P generation; first filial
F2 generation Offspring of F1; second filial
Homozygous Both factors have the same information
Heterozygous Two factors have different information
Law of segregation Members of each pair of alleles separate when gametes form
Law of independent assortment Pairs of alleles separate independently of one another during gamete formation
Monohybrid Cross that provides data about one pair of contrasting traits; 2x2
Dihybrid Cross that involves two pairs of contrasting traits
Incomplete dominance When an individual displays a trait that is intermediate between two parents
Codominance When two alleles are expressed at the same time
Continuous variation Seeing a variety of phenotypes on a continuum from one extreme to another
Sex-linked trait Trait determined by a gene found only on the X chromosome
Created by: SarahPickel15
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