Linkage

Genes on the same chromosome may not

assort independently

crossing over between homologs occurs in

meiosis 1 in prophase 1

recombination frequency is proportional to

the distance between genes

the map distance is numerically equal to the percentage of

recombination between the loci

the percent recombination will not

exceed 50%

what does mcclintok and creighton discover

crossing over does involve a phsyical exchange between homologus chromosomes

50cm means 50 or more cm

between genes

What is the first step of three point mapping protocol

create and induvial who is heterozygous for three genes

linked alleles are more likely

to be in the same gamete