Chapter 12: Genetics or something

MATES Biotechnology, Sprague 2024

who was gregor mendel?

austrian monk who grew pea plants, first geneticist

what is an allele?

versions of a trait

domininant vs. recessive

• dominant trait: only needs one allele present to be expressed

• recessive trait: needs two alleles present to be expressed

genotype vs. phenotype

• genotype: alleles, genes

• phenotype: physical traits

what is epistasis?

• a gene that affects the expression of a second

  • ex: pigment production affects if pigment color will be expressed

multiple alleles

the possible genotypical outcomes of a cross between different traits

blood type genetics

A and B are codominant, i is recessive

incomplete dominance

• heterozygote is an intermediary between the dominant and recessive trait

  • ex: red and white flowers can have an intermediary pink flower heterozygote