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genetics
Question | Answer |
---|---|
gene | a hereditary factor that influences a particular trait |
allele | a version of a gene |
genotype | a listing of the alleles in a genotype |
phenotype | an individuals observable traits |
homozygous | having two of the same allele |
heterozygous | having two different alleles |
dominant allele | an allele that produces the associated phenotype in heterozygotes |
recessive allele | an allele that produces the associated phenotype only in homozygotes |
pure line | a breed or strain of animals or plants that maintains a high degree of consistency in certain characters as a result of inbreeding for generations. |
hybrid | offspring from crosses between homozygous parents with different genotypes |
reciprocal cross | a cross in which the phenotypes associated with the male and female in a prior cross are reversed |
testcross | experimental cross between a homozygous recessive individual and an individual with the dominant phenotype but an unknown genotype |