Chapter 15

Question 1

Genes are located in certain positions which determines inheritance

Answer 1

Chromosome theory of inheritance

Question 2

What does the SRY gene do?

Answer 2

Development of the testes

Question 3

Gene on a sex chromosome

Answer 3

Sex-linked gene

Question 4

The inactive X in each cell condense into an object located along the nuclear envelope

Answer 4

Barr body

Question 5

How is the X chromosome inactivated?

Answer 5

X chromosome forms a barr body which occurs randomly and independently

Question 6

2 or more genes on the same chromosome that tend to be inherited together

Answer 6

Linked genes

Question 7

When does crossing over occur?

Answer 7

Prophase 1

Question 8

Genetic map based on recombination frequencies

Answer 8

Linkage map

Question 9

Homologs fail to move apart during meiosis 1 or sister chromatids fail to separate during meiosis 2

Answer 9

Nondisjunction

Question 10

1 or more chromosome are present with extra copies or a deficient of numbers

Answer 10

Aneuploidy

Question 11

Diploid cell has 1 copy of a chromosome instead of 2

Answer 11

Monosomy

Question 12

Diploid cell has 3 copies of a chromosome

Answer 12

Trisomy

Question 13

Have more than 2 chromosome sets

Answer 13

Polyploidy

Question 14

Removes a chromosomal segment

Answer 14

Deletion

Question 15

Repeats a segment

Answer 15

Duplication

Question 16

Reverses a segment within a chromosome

Answer 16

Inversion

Question 17

Moves a segment from one chromosome to a nonhomologous chromosome

Answer 17

Translocation

Question 18

Expression of an allele in offspring depends on whether the allele is inherited from the male or female parent

Answer 18

Genomic imprinting

Question 19

Genes that have been inherited only from your mom

Answer 19

Mitochondrial DNA