Lecture 4

Question 1

what is an exception to mendel’s principle of independent assortment

Answer 1

genetic linkage

Question 2

what physical process is relevant when discussing linkage

Answer 2

crossing over

Question 3

degree of recombination between 2 loci is a measure of?

Answer 3

linkage

Question 4

does genetic linkage have anything to do with physical distance

Answer 4

genetic and physical distance are not perfectly correlated

Question 5

which genotype is more prevalent in genetic linkage

Answer 5

parental

Question 6

what is the % recombination between 2 unlinked loci

Answer 6

50%

Question 7

what is the max % recombination you will find

Answer 7

50%

Question 8

how do you tell which are the parental genes in genetic linkage

Answer 8

the recombination/gametes that had the highest #

Question 9

1 map unit =

Answer 9

the distance between 2 loci showing 1% recombination

Question 10

map units/centiMorgans/cM

Answer 10

units of recombination

Question 11

recombination hotspots

Answer 11

1-2kb stretches of DNA that tend to be in gene dense regions

Question 12

when is the product ration method used

Answer 12

in F2 generations