Lecture 5

Question 1

What brings about recombination?

Answer 1

Chiasma formation during the zygotene/pachytene phase of meiotic prophase I

Question 2

What are the two types of recombination?

Answer 2

Inter-chromosomal recombination which is the independent assortment of chromosomes
Intra-chromosomal recombination which is the crossing over of chromosomes

Question 3

How can recombination frequency be used to map genes?

Answer 3

The farther apart genes genes are on a chromosome the more likely they are to be separated by a recombination event, thus recombination frequency can be directly used as 1%=1 map unit= I centimorgan to map the relative distances between genes