BISC 104 Mastering Biology Chapter 7

True or False: Drug and alcohol use will not affect male fertility.

False

What phenomenon in meiosis involves arbitrary placements for homologous pairs? A. Cytokinesis B. Crossing over C. Interphase D. Random alignment

Random alignment

Where are sperm produced in the testes? A. Bulbourethral glands B. Epididymis C. Vas deferens D. Seminiferous tubules

Seminiferous tubules

The first stage of meiosisPart complete Drag each image to the phase of meiosis I it depicts. Prophase I Metaphase I Anaphase I Telophase I and Cytokinesis

1. Prophase I 2. Metaphase I 3. Anaphase I 4. Telophase I and Cytokinesis

According to the graph, approximately how many more months would it take a 39-year-old female to get pregnant than a 23-year-old female? A. 5 months B. 7 months C. 6 months D. 3 months

6 months

In the diagram, which number represents a structure in which the sperm mature and become motile? Male reproductive system diagram A. 3 B. 6 C. 7 D. 9 E. 4

7

In the diagram, which number represents a structure that produces testosterone? Male reproductive system diagram A. 7 B. 1 C. 3 D. 8 E. 5

8

After a human egg and sperm fuse in fertilization, what is the immediate result? A. A fetus B. A gamete C. A zygote D. An embryo

A zygote

Meiosis concept mapPart complete Drag the terms to complete the concept map below. Diploid organisms Haploid gametes Meiosis II Maternal chromosomes Crossing over occurs Sister chromatids separate

A. Diploid organisms B. Haploid gametes C. Meiosis II D. Maternal chromosomes E. Crossing over occurs F. Sister chromatids separate

Two types of cell divisionPart complete Drag the labels onto the grid to indicate the phases of mitosis and meiosis. Use only pink labels for pink targets. Mitosis Prophase Metaphase Anaphase, Telophase and Cytokinesis Meiosis Prophase I Metaphase I Anaphase I, Telophase I and Cytokinesis Meiosis II

A. Mitosis B. Prophase C. Metaphase D. Anaphase, Telophase and Cytokinesis E. Meiosis F. Prophase I G. Metaphase I H. Anaphase I, Telophase I and Cytokinesis I. Meiosis II

During which phases of meiosis are sister chromatids pulled apart? A. Metaphase I B. Prophase I C. Anaphase II D. Metaphase II

Anaphase II

Which of these gametes contains one or more recombinant chromosomes? A. A and B B. D and E C. B and C D. A and D E. A and C

B and C

Which structure extrudes the egg cell but remains in the ovary to secrete estrogen and progesterone? A. Epididymis B. Endometrium C. Corpus luteum D. Oviducts

Corpus luteum

What are specialized male and female reproductive cells? A. Gametes B. Gonads C. Alleles D. Embryos

Gametes

How do gametes compare to somatic cells? A. Gametes are 2n and somatic cells are 1n. B. Gametes are genetically different while somatic cells are the same. C. Gametes and somatic cells are produced by mitosis. D. Genes in somatic cells are passed to the offspring.

Gametes are genetically different while somatic cells are the same.

What difference exists between the prophase of mitosis and prophase I of meiosis? A. Microtubules do not assemble until metaphase of mitosis. B. The nuclear envelope remains intact during prophase I of meiosis. C. DNA condenses into chromosomes only during prophase of mitosis. D. Genetic material may be exchanged between chromosomes during prophase I of meiosis.

Genetic material may be exchanged between chromosomes during prophase I of meiosis.

Which statement describes human haploid cells? A. Haploid cells are produced by mitosis. B. Haploid cells are produced within the gonads. C. Two haploid cells fuse to form a haploid organism. D. Haploid cells are generated from other haploid cells.

Haploid cells are produced within the gonads.

Which step occurs during meiosis? A. Sister chromatids are separated during telophase II. B. Sister chromatids separate during metaphase II. C. Homologous pairs of chromosomes separate during anaphase I. D. Homologous pairs of chromosomes align randomly during prophase I.

Homologous pairs of chromosomes separate during anaphase I.

Review the graph. For males and females in the 25 to 29 age bracket, how many months does it take to conceive a child? The graph indicating male and female age group for conceiving a child A. Males: 9.7 months; Females 10.6 months B. Males: 5.9 months; Females 5.7 months C. Males: 6.0 months; Females: 8.0 months D. Males: 8.0 months; Females 6.0 months

Males: 6.0 months; Females: 8.0 months

During which phase of meiosis do homologous chromosomes align at the middle of a dividing cell? A. Anaphase I B. Prophase II C. Metaphase I D. Metaphase II

Metaphase I

Part complete What phenomenon occurs when homologous pairs of chromosomes fail to separate during meiosis? A. Random alignment B. Nondisjunction C. Crossing over D. Cytokinesis

Nondisjunction

What process releases the egg from the ovary? A. Menstruation B. Oogenesis C. Ovulation D. Fertilization

Ovulation

Which event takes place during meiosis II? A. Sister chromatids separate from one another. B. DNA in chromosomes is replicated. C. Homologous chromosome pairs align randomly. D. Crossing over occurs between

Sister chromatids separate from one another.

What are the male gonads called? A. Zygotes B. Sperm C. Gametes D. Testes

Testes

How will the genetic information in an individual's gametes be affected by crossing over? A. The genetic information will produce more tumor suppressors. B. The genetic information will be the same as the individual's somatic cells. C. The genetic information will come from both the individual's parents. D. The genetic information will produce twin embryos.

The genetic information will come from both the individual's parents.

Why does the midpiece of sperm contain mitochondria? A. To provide energy for travel to the oviduct B. To prevent mutations in sperm production C. To produce the tail structure for movement. D. To provide energy for mitosis

To provide energy for travel to the oviduct

True or False: Human gametes must be haploid so that fertilization results in diploid organisms.

True

True or False: Sexually transmitted diseases can cause infertility in both men and women.

True

Not producing enough gametes is a major cause of infertility. What is the most common reason this occurs? A. stress B. marijuana use C. aging D. diet

aging

Homologous chromosomes migrate to opposite poles during _____. A. metaphase II B. prophase II C. metaphase I D. telophase II and cytokinesis E. anaphase I

anaphase I

During _____ sister chromatids separate. A. interphase B. metaphase I C. prophase I D. prophase II E. anaphase II

anaphase II

Which processes lead to most genetic variation in sexually reproducing organisms? Select all that apply. A. cytokinesis B. crossing over C. independent orientation of chromosomes in meiosis D. random fertilization

crossing over independent orientation of chromosomes in meiosis random fertilization

Meiosis II typically produces _____ cells, each of which is _____. A. two ... haploid B. four ... haploid C. two... diploid D. four ... diploid E. four ... identical to the other

four ... haploid

Which of the following factors can affect fertility? Select all that apply. A. genes B. age C. environmental exposures D. hormones

genes age environmental exposures hormones

During _____ chromosomes align single file along the equator of a haploid cell. A. metaphase I B. prophase I C. anaphase I D. telophase I and cytokinesis E. metaphase II

metaphase II

Infertility issues in couples can be due to A. problems in the female partner. B. problems in the male partner. C. problems in either partner.

problems in either partner.

Synapsis occurs during _____. A. prophase II B. telophase I and cytogenesis C. metaphase II D. prophase I E. anaphase II

prophase I

During _____ a spindle forms in a haploid cell. A. prophase II B. anaphase II C. metaphase II D. prophase I E. telophase I and cytokinesis

prophase II

At the end of _____ and cytokinesis, haploid cells contain chromosomes that each consist of two sister chromatids. A. telophase II B. telophase I C. interphase D. telophase E. metaphase II

telophase I

At the end of _____ and cytokinesis there are four haploid cells. A. telophase II B. anaphase I C. prophase I D. interphase E. prophase II

telophase II

Meiosis I produces _____ cells, each of which is _____. A. two... diploid B. two... identical to the other C. four ... diploid D. two ... haploid E. four ... haploid

two ... haploid