Genetics, REproduction, and Adaptation Test Review

15 terms by michelle_69

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DNA

molecule found in the cell nucleus that encodes genetic information

dominant

an allele that is always expressed when present

gene

a segment of DNA that determines or helps to determine a trait

genotype

the genetic makeup of an organism; the alleles possessed by an organism are represented by symbols (ex: ff)

heterozygous

having 2 alleles that are different

homozygous

having 2 alleles that are the same

hybrid

the offspring of genetically different parents

heredity

passage of genetic material from parents to offspring

phenotype

physical appearance of an organism

Punnet Square

diagram that shows the possible offspring of two parents (allows you to determine the probability of each offspring genotype)

recessive

allele that is not expressed when the dominant allele is present

trait

a characteristic of an organism

variation

a change or slight difference in condition, amout, or level

selective breeding

a process of breeding a plants and animals for particular traits

dna

genetic material which is found inside of the nucleus in chromosomes

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