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Genetics Definitions

TermDefinition
Genetics study of how genes are inherited and the affects of genes
Trait a certain characteristic
Hybrid the offspring of two parents with dominant and recessive alleles
Segregation the separation of alleles
Gamete haploid or sex cells
homozygous having two pairs of recessive of dominant alleles
heterozygous having one each of dominant and recessive
phenotype displayed characteristic
genotype genetic code, ex. Ff
independent assortment alleles do not affect each other during meiosis and sort independently
incomplete dominance both alleles combine when expressed
codominance both alleles express, but do not combine, ex. speckled roosters
multiple alleles more than one possible allele
polygenic traits traits influenced by more than one allele
haploid having one set, or half, the number of chromosomes
diploid having both sets of chromosomes, or 2n
meisosis cell division halving the number of chromesomes
tetrad two homologous chromosomes lining up together during meisosis
Created by: Sarchibald
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