linkage and mapping

Question 1

define genetic linkage

Answer 1

Two or more genes that are physically connected on a chromosome and genes that are transmitted to the next generation as a group

Question 2

what are linkage groups?

Answer 2

chromsomes

Question 3

F and g are located on the same chromosome. one chromosome alleles F and G are found, the homologue contains alleles f and g. what are examples or recombination events?

Answer 3

alleles F and g together on one chromsome

alleles f and G together on one chromosome

Question 4

statistical test used to determine if two genes are linked for assorting independently

Answer 4

chi-square test

Question 5

30 recombinants among 200 total offspring. what is the distance between these genes?

Answer 5

30/200 x 100 = 15 map units

Question 6

a map distance of 23.6 between two genes indicates:

Answer 6

23.6 % recombination between the two genes because one map unit = 1% recombination

Question 7

in mapping experiment which phenotype should occur most often in f2 offspring?

Answer 7

parental phenotypes most frequent
double crossover least frequent
single crossover intermediate frequent

Question 8

a crossover in meiosis is an exchange of genetic material between

Answer 8

non-sister chromatids of homologous chromosomes exchange DNA segments