Chapters 8,9,12 & 13 Review

Question 0

The exchange of parts between no homologous chromosomes is called___.

Answer 0

Reciprocal translocation

Question 1

The kinetochores_____.

Answer 1

Are sites at which microtubules attach to chromosomes.

Question 2

Why is crossing over important?

Answer 2

It allows the exchange of genes between homologous chromosomes

Question 3

Cytokinesis refers to____.

Answer 3

Division of the cell outside the nuclear material

Question 4

Down syndrome can be the result of____.

Answer 4

Nondisjunction of chromosome 21 during meiosis

Question 5

Anaphase

Answer 5

Phase of mitosis during which the chromosomes move toward separate poles of the cell.

Question 6

What is the difference between a benign tumor and a malignant tumor?

Answer 6

Benign tumor do not metastasize

Malignant rumors do

Question 7

Observation of cancer cells in culture support the hypothesis that cancer cells____.

Answer 7

Do not exhibit density-dependent inhibition

Question 8

In humans, the ______ determines the sex of the offspring because ______.

Answer 8

Male… The male can contribute either an X or Y chromosome

Question 9

Sexual recombination occurs when chromosomes are shuffled in _____ and fertilization.

Answer 9

Meiosis

Question 10

Bacteria can adapt to changes in the environment by means if mutation alone because______.

Answer 10

They multiply so rapidly

Question 11

Approximately 1 out of every 2,500 white people in the US is born with the recessive disease cystic fibrosis. According to the Hardy-Weinberg equilibrium equation, how many people are carriers?

Answer 11

1 in 25

Question 12

Selection that acts, over evolutionary time, to preserve traits that increase an individual’s ability to mate is known as ____.

Answer 12

Sexual selection

Question 13

Which one of the following is NOT homologous to a human arm?

Chicken wing
Crayfish claw
Horses front flipper
Seal flipper
Frogs front leg

Answer 13

Crayfish claw

Question 14

DNA Fingerprinting______.

Answer 14

Compares the DNA banding patterns of small segments of chromosomes

Question 15

Bacteria use restriction enzymes to_____.

Answer 15

Destroy foreign DNA

Question 16

What are sticky ends?

Answer 16

Unpaired bases produced by a restriction enzyme

Question 17

Copies of cloned genes are stored in a ____.

Answer 17

Genomic library

Question 18

What enzyme could create a between the adjacent, unjoined nucleotides?

Answer 18

DNA Ligase

Question 19

The Y chromosomes of mammals contain genes that code for ____.

Answer 19

Maleness and a few other traits

Question 20

An allele is ____.

Answer 20

An alternative version of a gene

Question 21

A man who has type B blood and a woman who has type A blood could have children of which of the following phenotypes?

Answer 21

A, B, AB, or O

Question 22

Binary fission in bacterial cells involves____.

Answer 22

Distribution of a copy of the single parental chromosome to each daughter cell

Question 23

Traits that enhance an individual’s ability to compete for limited resources are called____.

Answer 23

Adaptations