5 - LINKAGE AND MAPPING Flashcards
1
Q
how do you make a dihybrid
A
start with all mutant x all wild type
2
Q
when are recombinants produced?
A
during meiosis
prophase I
happens after DNA replication
3
Q
neurospora life cycle and what is special about it
A
two mating types: A and a
4
Q
relationship between frequency of recombinant product and distance of genes
A
crossover happens randomly, high diversity
the further apart genes are more likely to crossover and higher chance to produce a recombinant
5
Q
what is the genetic map unit and what does it mean
A
centimorgan
1 genetic map unit (m.u): the frequency at which one out of 100 meiosis products is recombinant
(recombinants/total)*100
in theory RF cannot exceed 50%
6
Q
how to make a trihybrid
A
