ML CH 12 VOCAB REVIEW

Situation in which one allele is not completely dominant over another allele

• incomplete dominance

• codominance

• crossing over

• principle of dominance

situation in which both alleles of a gene contribute to the phenotype of the organism

• segregation

• incomplete dominance

• codominance

• crossing over

Mendel's second conclusion, which states that some alleles are dominant and others are recessive

• crossing over

• incomplete dominance

• independent assortment

• principle of dominance

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

• tetrad

• allele

• gamete

• gene

physical characteristics of an organism

• phenotype

• trait

• genotype

• genetics

one of a number of different forms of a gene

• hybrid

• haploid

• allele

• trait

Process in which homologous chromosomes exchange portions of their chromatids during meiosis.

• crossing over

• meiosis

• fertilization

• codominance

The scientific study of heredity

• meiosis

• genetics

• polygenic trait

• segregation

structure containing 4 chromatids that forms during meiosis

• haploid

• hybrid

• trait

• tetrad

A gene that has more than two alleles

• multiple alleles

• polygenic trait

• Punnett square

• heterozygous