Our Origins: Discovering Physical Anthropology (Fourth Edition)
4th Edition
ISBN: 9780393614008
Author: Clark Spencer Larsen
Publisher: W. W. Norton & Company
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Chapter 3, Problem 2SQ
Summary Introduction
Introduction: The process of the division of the parent cell into two daughter cells is called cell division. The mitosis and meiosis are two types of cell divisions. The cell division has five stages namely interphase, prophase, metaphase, anaphase, and telophase.
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At metaphase I, homologous chromosomes are connected only at what structures? a. chiasmata b. recombination nodules c. microtubules d. kinetochores
What change in chromosome structure causes an extra copy of a chromosomal region to occur?
A.
Duplication
B.
Inversion
C.
Simple translocation
D.
Deletion
E.
Reciprocal translocation
Which of these things happens in meiosis but Not mitosis?
A. sister chromatids separate from each other
B. diploid daughter cells are formed
C. homologous chromosomes pair up
Chapter 3 Solutions
Our Origins: Discovering Physical Anthropology (Fourth Edition)
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- What are homologous chromosomes? a. The two halves of a replicated chromosome b. Two identical chromosomes from one parent c. Two genetically identical chromosomes, one from each parent d. Two genetically similar chromosomes, one from each parentarrow_forwardThe chromosomes become visible under a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardAsaparrow_forward
- What is the fundamental difference between mitosis and meiosis? A. DNA is replicated twice in meiosis, but only once in mitosis. B. The number of DNA molecules per cell nucleus is cut in half in meiosis but remains constant in mitosis. C. The number of chromosomes doubles in meiosis, whereas it stays the same in mitosis. D. Mitosis involves two cell divisions, whereas meiosis only involves one.arrow_forwardWhen homologous chromosomes cross over, what is the result? a. Two sister chromatids get tangled, resulting in one altering the sequence of its DNA b. Two sister chromatids exchange identical pieces of DNA c. Two nonsister chromatids get tangled, break and proteins re-join them d. Each of the four DNA strands of a homologous pair is broken, and the pieces are mixedarrow_forwardWhat cellular process is responsible for genetic recombination? a. The independent alignment of homologous pairs during meiosis I b. Separation of the homologues in meiosis I c. Separation of the chromatids during meiosis II d. Crossing over between homologuesarrow_forward
- What is the definition of a map unit? A. The frequency of recombination between two or more genes B. 1 kb (1000 base pairs) of DNA C. One crossover event in meiosis D. 1% recombinant products of meiosisarrow_forwardUnpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophasearrow_forwardHow can duplications arise? A. by uneven crossing over during meiotic prophase B. by the loss of a telomere C. by chromosome breakage and exchange of arms D. by spindle failure during chromosome separationarrow_forward
- Which process is necessary to prevent the doubling of genome size during sexual reproduction? a. meiosis b. mitosis c. apoptosis d. metastasis e. contact inhibitionarrow_forwardMatch the terms to their corresponding definitions. 1. long strands of DNA 2. each half of the x-shape 3. sex cells 4. groups of proteins that keep DNA organized a. chromatids b. chromosomes c. histones d. gametesarrow_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
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Cell Division - Mitosis and Meiosis - GCSE Biology (9-1); Author: Mr Exham Biology;https://www.youtube.com/watch?v=w7vp_uRA8kw;License: Standard YouTube License, CC-BY