Chapter 5.2: Recombination: A Result of Crossing-Over During Meiosis

Question 1

Define genetic markers

Answer 1

alleles of genes that could serve as points of reference in determining whether particular progeny were the result of recombination

Question 2

What are alleles of genes that could serve as points of reference in determining whether particular progeny were the result of recombination?

Answer 2

genetic markers

Question 3

How does recombination contribute to genetic diversity?

Answer 3

o Recombination contributes to genetic diversity by reshuffling the alleles of genes between homologous chromosomes

Question 4

What is one RF?

Answer 4

o Defined one RF percentage point as the unit of measure along a chromosome also called centimorgan (cM) or map unit (m.u.)

Question 5

Linked or unlinked genes?

Parentals = Recombinants (RF = 50%)

Answer 5

unlinked

Question 6

Linked or unlinked genes?

Parentals > Recombinants (RF < 50%)

Answer 6

linked

Question 7

Linked or unlinked genes?

syntenic and sufficiently close together on the same chromosome so that they do not assort independently

Answer 7

linked

Question 8

Linked or unlinked genes? Occurs either when two genes are on different chromosomes or when they are sufficiently far apart on the same chromosome that at least one crossover occurs between them in every meiosis

Answer 8

unlinked