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Biology Ch.6 Genes

Mendel and Genes

Genotype Genetic makeup of a specific trait
Trait Distinguishing physical characterstics
Allele Different forms of a gene that can occur at the same place on the chromosome
Purebred Line/ Population of organisms that is genetically the same
Cross The mating of two organisims
Homozygous Have 2 of the same alleles for a specific trait
Genome All of an organisms genetic material
heterozygous Have two different alleles for a specific trait
Recessive Allele that is NOT expressed when 2 different alleles are present. Is only expressed when there are 2 copies of it.
Locus The specific position of a gene, the genes address on the chromosome.
Dominant Allele that is expressed when 2 different alleles are present.
Phenotype Physical characteristics or traits of an organism.
Genetics The study of biological inheritance patterns and variation in organisms.
Law of Segregation Law stating the organisms inherit 2 copies of each gene, one from each parent and organisms only give 1 copy of each gene to their offspring.
Gene A piece of DNA that codes traits
Created by: osubuckeye1012