Recombination summary Flashcards
1
Q
when does crossing over happen in meiosis for eukaryoties
A
prophase of meiosis I
2
Q
what enzyme cleaves the single strand of parental dna
A
endonuclease
3
Q
Helicase does what
A
strand displacement - unwinds the two strands after nicks have been formed
4
Q
What protein then stimulates exchanging of pairing partners
A
RecA
5
Q
what DNA joins the cleaved strands covalently
A
Ligase
6
Q
What is chi structure
A
x shaped recombination intermediate
7
Q
how is chi structure been observed
A
electron microscopy
8
Q
what catalyses the cleavage of single strands at the chi junction
A
endonuclease
