Anthro 202 Exam 2 Review

Heterozygote

• same alleles

• allele is always expressed when present

• different alleles

• if dominant is present, expression is masked

same alleles

• homozygote

• recessive

• heterozygote

• dominant

Dominant

• both alleles expressed when present

• if dominant is present, expression is masked

• same alleles

• allele is always expressed when present

if dominant is present, expression is masked

• recessive

• homozygote

• dominant

• heterozygote

Codominance

• if dominant is present, expression is masked

• allele is always expressed when present

• both alleles expressed when present

• how those genes are expressed

genetic basis for a trait

• dominant

• phenotype

• recessive

• genotype

Phenotype

• how those genes are expressed

• both alleles expressed when present

• genetic basis for a trait

• same alleles

three different alleles exist

• Polygenic Trait

• Polymorphic Trait

• Pleiotropy

• Mendelian Trait

The Human ABO blood system is an example of....

• Polymorphic Trait

• Polygenic Trait

• Mendelian Trait

• Pleiotropy

traits influenced by the action of a single gene

• Pleiotropy

• Polygenic Trait

• Mendelian Traits

• Polymorphic Trait