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7th Unit 2b

Genetics: Heredity

TermDefinition
Heredity The passing of traits from parents to their offspring.
Genetics The study of heredity.
Allele An alternative form of a gene.
Punnett Square A diagram used to predict the outcome of a genetic cross.
Gene A segment of DNA that controls a trait.
Dominant allele The allele that is expressed in an organism.
Recessive allele The allele that is hidden by the dominant gene or not expressed.
Genotype An organism's combination of genes for a trait.
Phenotype An organism's physical appearance or characteristics as a result of its combination of genes.
Law of Independent Assortment The pairs of genes separate independently of one another.
Law of Segregation The pair of alleles for a trait will separate when gametes are formed; so that each gamete will have a random allele.
Homozygous An individual that has two alleles that are the same for a particular trait.
Heterozygous An individual that has two alleles that are different for a particular trait.
Created by: darrin_evans
 

 



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