Exam 3: Inheritence

recombination

new allele combinations made from independent assortment

recombinant

product that has a new combination of alleles from the parents

independent assortment

If 50% of the offspring are recombinants, what does that indicate?

polygenes (quantitative trait loci)

traits that are influenced by more than one gene; creates a lot of variance (height, skin color)

gene linkage

don’t follow mendelian ratios

<50% recombinants

crossing overc

how are linked genes made?

cis conformation

dominant alleles on same copy of c’some (AB/ab)

trans conformation

dominant alleles on separate copies of c’some (Ab/Ba)

Incomplete dominance

heterozygotes are in between both alleles (red + white= pink)

Codominance

traits of both alleles are present (cows)