Mendel´s second law: segregation, recombination Flashcards
1
Q
WHat is the second law
A
alleles of different genes (encoding for diff traits)
assort independently of each other… i.e. genes on non-homologous
chromosomes behave independently
2
Q
Linked genes
A
two genes located closely on same chromosome passed into gamete together
3
Q
cis linkage phase
A
coupling
AE ae only inherit one dom allele or reccesive onnly
4
Q
trans linkage phase
A
repulsion
Ae aE so inherit a combo
5
Q
Recombination
A
crossing over
chromosomes exchange DNA strands during 1st meiotic prophase.
4 diff gametes produced , 2 being recombinant
6
Q
If two gametes are distant
A
they may freely combine
freq will be at 50%
7
Q
Complete linkage
A
no crossing over
8
Q
Incomplete linkage
A
crossing over
