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