Genetics and evolution

specific characteristic of an individual

• hybrid

• trait

• gene

offspring of crosses between parents with different traits

• hybrid

• phenotype

• gamete

sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from parent to offspring

• alle

• trait

• gene

one of a number of different forms of a gene (PP, pp)

• hybrid

• phenotype

• allele

Principle of Dominance

• some alleles are dominant and others are recessive

• All the alleles are dominant and none are recessive

PP

• homozygous dominant

• homozygous

  recessive

• heterozygous

pp

• homozygous dominant

• homozygous

  recessive

• heterozygous

Pp

• homozygous dominant

• homozygous

  recessive

• heterozygous

sex cell

• genotype

• allele

• gamete

genetic makeup of an organism

• genotype

• phenotype