Chapter 6: Genetic Linkage and Mapping in Eukaryotes

Question 1

synteny

Answer 1

when two or more genes are located on the same chromosome

Question 2

genetic linkage

Answer 2

genes that are close together on the same chromosome tend to be transmitted as a unit, influencing inheritance patterns

Question 3

linkage groups

Answer 3

synonymous with chromosome, because chromosomes contain a group of genes that are physically linked together

Question 4

how many linkage groups do humans have?

Answer 4

Humans have 22 autosomal linkage groups, and an X chromosome linkage group, and males have a Y chromosome linkage group. In addition, the human mitochondrial genome is another linkage group.

Question 5

bivalent

Answer 5

also called a tetrad, two pairs of sister chromatids joined in crossing over

Question 6

genetic recombination

Answer 6

an event leading to new combinations of alleles

Question 7

nonparental cells

Answer 7

also called recombinant cells, a product of crossing over in which linked alleles are reassorted, producing cells that do not share the same combination of alleles found in the chromosomes of their parents

Question 8

recombinant cells

Answer 8

also called nonparental cells, a product of crossing over in which linked alleles are reassorted, producing cells that do not share the same combination of alleles found in the chromosomes of their parents

Question 9

parental offspring

Answer 9

also called non recombinant offspring, offspring that have inherited the same combination of alleles that are found in the chromosomes of their parents

Question 10

nonrecombinant offspring

Answer 10

also called parental offspring, offspring that have inherited the same combination of alleles that are found in the chromosomes of their parents