Chapter 15

Question 1

chromosome theory

Answer 1

mendelian genes have specific loci sites along chromosomes, and it is the chromosomes that undergo segregation and independent assortment

Question 2

wild type

Answer 2

phenotype for a character most commonly observed in natural populations

Question 3

sex linked chromosome

Answer 3

gene located on either sex chromosome

Question 4

Barr body

Answer 4

condensed compact object of the inactive X in each cell of a female

Question 5

linked genes

Answer 5

genes located near each other on the same chromosome tend to be inherited together in genetic crosses

Question 6

genetic recombination

Answer 6

the production of offspring with combinations of traits that differ from those found in either P generation parent

Question 7

parental type

Answer 7

matching offspring/short for phenotype

Question 8

recombinant types

Answer 8

new combinations of traits

Question 9

crossing over

Answer 9

how recombinants are produced

Question 10

genetic map

Answer 10

an ordered list of the genetic loci along a particular chromosome

Question 11

aneuploidy

Answer 11

if either of the aberrant gametes unites with a normal one at fertilization, the zygote will also have an abnormal number of a particular chromosome

Question 12

deletion

Answer 12

when a chromosomal fragment is lost

Question 13

translocation

Answer 13

a rearrangement of chromosomes