Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 12, Problem 15SQ
Summary Introduction
Introduction: The sexually reproducing organisms give rise to unique progenies that contains genes from both of its parents. Such reproduction gives evolutionary advantages than the asexually reproduced ones to survive in the unfavorable condition. Sexual reproduction is a reproduction where the offspring are produced that inherits genes from both of its parents. It will not be exactly as its parents but will be mixed and showed diversity after each generation. Variations are seen among them as they possess randomly mixed genetic traits from both their parents and give birth to unique young ones. Such offspring are able to survive better in unfavorable conditions than the asexual ones.
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Which of the following meiotic events by itself does NOT result in an abnormal set of genes in a gamete?
a.
Translocation
b.
Deletion
c.
Nondisjunction
d.
Recombination
e.
Inversion
The significance of meiosis are as follows:
A. Mutation
D. Formation of gametes
B. Maintenance of chromosome number
C. Genetic information
E. Crossing over
21. Meiosis form gametes that are essential for sexual reproduction.
22. Meiosis switches on the genetic information for the development of gametes.
23. Meiosis maintains the fixed number of chromosomes in sexually reproducing
organisms.
24. It introduces new combination of traits or variations.
25. take place due to irregularities of meiotic division.
Which of the following is a TRUE statement regarding the outcome of meiosis?
A.
In meiosis, one diploid cell (2n) can produce 2 haploid cells in males (1n).
B.
In meiosis, four haploid cells (1n) can produce 2 diploid cells (2n) in males.
C.
In meiosis, one diploid cell (2n) can produce up to 4 haploid cells (1n) in males.
D.
In meiosis, one diploid cell (2n) can produce 2 diploid cells (2n) in females.
Chapter 12 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 12 - BPA and Abnormal Meiosis In 1998, researchers at...Ch. 12 - BPA and Abnormal Meiosis In 1998, researchers at...Ch. 12 - BPA and Abnormal Meiosis In 1998, researchers at...Ch. 12 - One evolutionary advantage of sexual over asexual...Ch. 12 - Prob. 2SQCh. 12 - Prob. 3SQCh. 12 - Prob. 4SQCh. 12 - Meiosis ______ the parental chromosome number. a....Ch. 12 - Dogs have a diploid chromosome number or 78. How...Ch. 12 - The cell in the diagram to the right is in...
Ch. 12 - Which of the following cells can undergo meiosis?...Ch. 12 - Prob. 9SQCh. 12 - Crossing over mixes up ______. a. chromosomes b....Ch. 12 - Crossing over happens during which phase of...Ch. 12 - Prob. 12SQCh. 12 - Which of the following is one of the very...Ch. 12 - Match each term with the best description. _______...Ch. 12 - Prob. 15SQCh. 12 - The diploid chromosome number for the body cells...Ch. 12 - In your own words, describe how genetic diversity...Ch. 12 - Make a simple sketch of meiosis in a cell with a...Ch. 12 - Asexually reproducing animal populations are rare,...Ch. 12 - Figure 12-7 shows how meiosis in a cell with three...
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- The product of meiosis describes the following, except: A. Produces somatic cells B.Genetically distinct from each other. C.Four haploid cells D. Produces gametesarrow_forwardWhat two processes are responsible for generating genetic diversity in gametes? Select one or more: a. Independent assortment of homologous chromosomes b. Separation of sister chromatids c. Recombination (“crossing over”) of sister chromatids d. Recombination (“crossing over”) of homologous chromosomesarrow_forwardAt the end of meiosis in humans, four gametes are produced that are: A. Genetically identical to each other and to the parent cell B. Genetically identical to each other but genetically different from the parent cell C. Genetically different from each other and the parent cell D. Genetically identical to the parent cell from different from each otherarrow_forward
- Which statement about meiosis (in humans) is FALSE? Select one: a. It reduces the amount of genetic material (chromosomes) by half b. It is part of the process of sexual reproduction c. The cells it produces are identical to each other d. It produces haploid gametes e. It occurs only in germline cells of the reproductive organsarrow_forwardWhich of the following can occur by the process of meiosis but not mitosis? A. Haploid cells fuse to form diploid cells B. Diploid cells form haploid cells C. A diploid cell combines with a haploid cell D. Haploid cells multiply into more haploid cellsarrow_forwardIndependent assortment is a mechanism that generates significant genetic diversity among gametes. When, during meiosis, does independent assortment occur? A. Prophase of meiosis II B. Anaphase of meiosis II C. Prophase of meiosis I D. Anaphase of meiosis I E. Metaphase of meiosis I F. Metaphase of meiosis II 35.arrow_forward
- Which of the following correctly describes the gametes that will form as a result of nondisjunction during anaphase II in a human male? a. Two sperm with 24 chromosomes and two sperm with 22 chromosomes b. Two sperm with 23 chromosomes, one sperm with 22 chromosomes, and one sperm with 24 chromosomes c. Four sperm with 24 chromosomes d. Four sperm with 22 chromosomesarrow_forwardWhen two genes are genetically “linked”, gametes produced during meiosis will usually contain allele combinations that mimic the way the alleles were placed on the parent cell’s chromosomes unless what process successfully occurs? Select one: a. Disjunction b. Self-fertilization c. Crossing over/recombination d. Aneuploidyarrow_forwardSeparation of homologous chromosomes during Meiosis I requires: Select one: a. Removing centromere cohesion b. Nondisjunction c. Separase If nondisjunction occurred during Meiosis II: Select one: a. We assume all other meiotic events occurred normally b. All four gametes will be abnormal c. There is a higher risk that a second nondisjunction event occurredarrow_forward
- Which of the following is UNTRUE with regards to human gametes and their production: A. Female gametes complete Meiosis II only after fertilization B. Polar bodies are the result of asymmetric cytokinesis C. Fetal oocytes are arrested in metaphase II D. Cells fated to become eggs and sperm undergo both mitosis and meiosis E. Meiosis in male yields 4 haploid productsarrow_forwardDuring which of the following meiotic stages determines which combination of parental chromosomes will end up in each gamete. a. Prophase I b. Metaphase I + Anaphase I c. Prophase II d. Metaphase + Anaphase II e. Telophasearrow_forwardWhich of the following statements is not correct ? a. Homologous chromosomes are separated during meiosis 1. b. In humans, a primary spermatocyte cell has 92 chromatids c. A null allele is characterized by the complete loss of a gene or its function d. According to the germ line theary all cells (germ line and somatic) cotribute to the next generation e. The lineage of cells that eventually form eggs or sperms is known as germ-line cellsarrow_forward
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