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Unit 2 Lesson 10

Genetic Research

TermDefinition
allele a version of a gene
carrier an individual who has one recessive allele for a genetic disease but usually does not show symptoms of the disease
DNA a double stranded helix that carries genetic information on how to produce proteins
dominant trait a trait that is expressed even if only one allele for the trait is present
gamete a sex cell; sperm or egg
genotype the genetic make-up for a particular trait
heterozygous having two different alleles for a given gene
homologous chromosomes a pair of chromosomes that carry the same genes in the same locations along the chromosome
homozygous having two identical alleles for a given gene
phenotype the observable characteristics of a trait
protein synthesis the cellular process through which proteins are made
Punnett square a diagram that is used to show the combinations and frequencies of the different genotypes and phenotypes among the offspring of a cross, in accordance with Mendelian inheritance
recessive trait a trait that is expressed only if two alleles for the trait are present
Created by: atrang
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