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 14, Problem 8SQ
Summary Introduction
Introduction: During sexual reproduction, meiosis is a process of cell division where chromosome number is reduced to half. Its purpose is the formation of gametes. The homologous chromosomes randomly align with their homologs at metaphase I. The chromosomes are randomly paired and segregated to opposite poles.
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The law of segregation of chromosomes arises due to events in _________.
A.
Mitosis and meiosis II
B.
Mitosis and meiosis I
C.
Meiosis I only
D.
Meiosis II only
The two main sources of genetic variation from meiosis are ________.
a.
random orientation of homologous pairs and mutation
b.
crossing over and random mutation
c.
random orientation of homologous pairs and crossing over
Crossing over mixes up_____ . a. chromosomes c. zygotes b. alleles d. gametes
Chapter 14 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 14 - Prob. 1DAACh. 14 - Prob. 2DAACh. 14 - Prob. 3DAACh. 14 - Prob. 4DAACh. 14 - Prob. 5DAACh. 14 - Prob. 1SQCh. 14 - Pedigree analysis is necessary when studying human...Ch. 14 - A recognized set of symptoms that characterize a...Ch. 14 - Prob. 4SQCh. 14 - A trait that is present in a male child but not in...
Ch. 14 - Choose the statement that is incorrect. a. A son...Ch. 14 - Prob. 7SQCh. 14 - Prob. 8SQCh. 14 - Klinefelter syndrome (XXY) can most be easily...Ch. 14 - Prob. 10SQCh. 14 - Does the phenotype indicated by the red circles...Ch. 14 - G6PD deficiency is an X-Linked recessive disorder....Ch. 14 - Marian syndrome (Section 13.5) is inherited in an...Ch. 14 - Duchenne muscular dystrophy, which is inherited in...Ch. 14 - Human females have two X chromosomes (XX); males...Ch. 14 - A mutation on an autosome causes a particular...Ch. 14 - Expression of the SRY gene on the Y chromosome...Ch. 14 - The somatic cells of most individuals with Down...Ch. 14 - Mutations in the genes for clotting factor VIII...
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- Klinefelter syndrome (XXY) can most be easily diagnosed by_______ . a. pedigree analysis c. karyotyping b. aneuploidy d. phenotypic treatmentarrow_forwardGenetic variation from meiosis is generated during ________. a. both meiosis I and meiosis II b. meiosis II c. meiosis Iarrow_forwardWhat is it called when chromosomes fail to separate properly during meiosis? A. Nondisjunction B. Karyotype C. Chromosomal separation failure D. Inappropriate separation E. Karyokinesisarrow_forward
- The stages of meiosis where independent assortment occurs and crossing over begins, respectively, are Select one: a. Metaphase I and prophase II b. Metaphase II and prophase I c. Metaphase I and prophase I d. Metaphase I and II and prophase I and IIarrow_forwardThe part of meiosis that is similar to mitosis is________.a. meiosis Ib. anaphase Ic. meiosis IId. interkinesisarrow_forwardAny deviation in the number of chromosomes that involves individual chromosomes, as opposed to entire sets of chromosomes, is known as which one of the following?a. Aneuploidy c. Duplication b. Disomy d. Translocationarrow_forward
- In which phase of meiosis does crossing over occur? Group of answer choices A. prophase I B. prophase II C. anaphase II D. metaphase I E. metaphase Iarrow_forwardDuring meiosis, in which stage does crossing over occur? Select one: a. Anaphase I b. Prophase I O c. Metaphase I d. Prophase II O e. Anaphase IIarrow_forwardWhich of the following statements is INCORRECT? Mitosis is a conservative mechanism that preserves the genetic status quo. Meiosis is a special type of cellular division that occurs in gametes. After mitosis, two identical 2n daughter cells are produced. After meiosis I, four n daughter cells are produced. Genetic recombination or diversity is a feature of __________. A. Meiosis I C. Mitosis B. Meiosis II D. Choices A, B, and C are correct. The following are cellular events during prophase I, EXCEPT: A. Chromatin condensation C. Crossing-over B. Synapsis D. Paired homologs attach to spindle fibers. Which of the following statements refers to synapsis? It is the pairing of homologous chromosomes during meiosis. It is the alignment of chromosomes on the equatorial plate. It is the exchange of parts between non-sister chromatids. It represents the sites where crossing-over occurred. Which of the following events below…arrow_forward
- Homologous chromosomes move toward opposite poles of a dividing cell during a. fertilization b. meiosis II c. meiosis I d. mitosisarrow_forwardAlternative forms of the same gene are called _________ . a. gametes c. alleles b. homologous d. sister chromatidsarrow_forwardWhich 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. Inversionarrow_forward
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