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Human Biology

Cecie Starr, Beverly McMillan

Chapter 18

Cell Reproduction - all with Video Answers

Educators

Chapter Questions

13:29

Problem 1

DNA, packaged in chromosomes, is distributed to daughter cells by _________ or _________ .

Abed Othman
Abed Othman
Numerade Educator
06:43

Problem 2

Each kind of organism contains a characteristic number of _________ in each cell; each of those structures is composed of a ___________ molecule and proteins.

Abed Othman
Abed Othman
Numerade Educator
03:59

Problem 3

A pair of chromosomes that are similar in length and the traits they govern are called _________ .
a. diploid chromosomes
b. mitotic chromosomes
c. homologous chromosomes
d. germ chromosomes

Abed Othman
Abed Othman
Numerade Educator
03:01

Problem 4

Somatic cells have a ______________ number of chromosomes.

Abed Othman
Abed Othman
Numerade Educator
05:04

Problem 5

Interphase is the stage when __________ .
a. a cell ceases to function
b. a germ cell forms its spindle
c. a cell grows and duplicates its DNA
d. mitosis takes place

Abed Othman
Abed Othman
Numerade Educator
04:10

Problem 6

After mitosis, each daughter cell contains genetic instructions that are _____________ and ___________ chromosome number of the parent cell.
a. identical to the parent cell's; the same
b. identical to the parent cell's; one-half the
c. rearranged; the same
d. rearranged; one-half the

Abed Othman
Abed Othman
Numerade Educator
04:40

Problem 7

All of the following are stages of mitosis except ___________ .
a. prophase
b. interphase
c. metaphase
d. anaphase

Rashmi Sinha
Rashmi Sinha
Numerade Educator
07:03

Problem 8

A duplicated chromosome has ____________ chromatids.
a. one
b. two
c. three
d. four

Abed Othman
Abed Othman
Numerade Educator
12:35

Problem 9

Crossing over in meiosis __________ .
a. occurs between sperm DNA and egg DNA at fertilization
b. leads to genetic recombination
c. occurs only rarely

Abed Othman
Abed Othman
Numerade Educator
08:03

Problem 10

Because of the _________ alignment of homologous chromosomes during meiosis, gametes can end up with _________ mixes of maternal and paternal chromosomes.
a. unvarying; different
b. unvarying; duplicate
c. random; duplicate
d. random; different

Abed Othman
Abed Othman
Numerade Educator
View

Problem 11

Match the stage of mitosis with the following key events.
a. sister chromatids separate and move to opposite poles
b. chromosomes condense and a microtubular spindle forms
c. chromosomes decondense, daughter nuclei re-form
d. chromosomes line up at a spindle equator
metaphase
prophase
telophase
anaphase

Abed Othman
Abed Othman
Numerade Educator