Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 14, Problem 10TY
Summary Introduction
Introduction:
A change in the number of chromosomes is called aneuploidy. If there is an extra chromosome it is called a trisomy and if there is a chromosome less, then it is called a monosomy.
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Which of the following processes leads to aneuploidy, the condition of having too many or too few copies of a particular chromosome? Select all that apply.
Nondisjunction of chromosomes during mitosis
Nondisjunction of chromosomes during meiosis
Proper separation of chromosomes during mitosis
Proper separation of chromosomes during meiosis
Crossing over (mark all that apply):
O produces new assortments of maternal and paternal chromosomes
results in new gene combinations on chromosome
is considered a misdemeanor in Utah, Arizona, Alabama, Arkansas, Mississippi and South Carolina
occurs during Prophase I of meiosis
occurs during Anaphase I of meiosis
occurs during Prophase 2 of meiosis and increases genetic diversity
Polyploid organisms of a normally diploid species are often sterile because:
tetraploids are not sterile
some of the chromosomes cannot synapse during mitosis
none of the chromosomes can synapse during meiosis
all the homologous chromosomes attempt to synapse together during meiosis
Chapter 14 Solutions
Principles of Biology
Ch. 14.1 - Researchers usually treat cells with drugs that...Ch. 14.1 - Researchers usually treat cells with drugs that...Ch. 14.1 - Refer back to Figure 13.13. How do checkpoint...Ch. 14.1 - A cell that is diploid has two chromosomes. pairs...Ch. 14.1 - In eukaryotes, DNA replication produces sister...Ch. 14.1 - Prob. 3TYKCh. 14.2 - Refer back to the karyotype in Figure 14.1. In...Ch. 14.2 - What are the functions of the three types of...Ch. 14.2 - Prob. 1TYKCh. 14.2 - Prob. 2TYK
Ch. 14.2 - Sister chromatids separate from each other during...Ch. 14.2 - With regard to chromosome composition, how does...Ch. 14.3 - Prob. 1CCCh. 14.3 - Prob. 2CCCh. 14.3 - What is the main reason for meiosis in animals?...Ch. 14.3 - In meiosis I, crossing over occurs during...Ch. 14.3 - Prob. 2TYKCh. 14.3 - Prob. 3TYKCh. 14.4 - Prob. 1CCCh. 14.4 - A chromosome in which the telomere is at one end...Ch. 14.4 - Prob. 2TYKCh. 14.4 - Prob. 3TYKCh. 14 - Prob. 1TYCh. 14 - Prob. 2TYCh. 14 - Checkpoints during the cell cycle are important...Ch. 14 - Prob. 4TYCh. 14 - Prob. 5TYCh. 14 - Prob. 6TYCh. 14 - Prob. 7TYCh. 14 - Prob. 8TYCh. 14 - Prob. 9TYCh. 14 - Prob. 10TYCh. 14 - Distinguish between homologous chromosomes and...Ch. 14 - The Oca2 gene, which influences eye color in...Ch. 14 - PRINCIPLES A principle of biology is that cells...Ch. 14 - Why is it necessary for chromosomes to condense...
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- Which of the following statements is not true in comparing mitosis and meiosis? a. Twice the number of cells are produced in meiosis as in mitosis. b. Meiosis is involved in the production of gametes, unlike mitosis. c. Crossing over occurs in meiosis I but not in meiosis II or mitosis. d. Meiosis and mitosis both produce cells that are genetically identical. e. In both mitosis and meiosis, the parental cell is diploid.arrow_forwardNondisjunction can be caused by ________. a. crossing over in meiosis b. segregation in meiosis c. failure of chromosomes to separate during meiosis d. multiple independent assortmentsarrow_forwardWhat processes are responsible for the generation of genetic variation during meiosis, and at what point in meiosis does each occur? Random alignment and separation of homologs that takes place during metaphase I and anaphase I, respectively. Independent assortment of homologous that takes place during anaphase II. Crossing over of non-sister chromatids that take place during prophase I. Replication of DNA during the S phase.arrow_forward
- Arrange the events in chronological order for the physical process of meiotic recombination. Prophase I of meiosis begins. Recombination is complete. Homologous chromosomes pair together. Enzymes break both strands of DNA in one chromosome. The 3' overhang strand of DNA invades the double helix of the homologous chromosome. Enzymes resolve the Holliday junction. The duplexed strand of DNA serves as a primer for synthesis of new DNA. Enzymes degrade the 5' strands of DNA.arrow_forwardThe process of meiosis results in: the production of egg. sperm or pollen all of these choices are true of meiosis a halving in chromosome number in the daughter cells the formation of four daughter cells different from each other and the parent cellarrow_forwardWhich of the following is/are true of MEIOSIS but NOT MITOSIS? (May select multiple answers.) Results in two identical diploid cells. Involves one round of cell division. O Involves one round of DNA replication. Results in four different haploid cells. Involves two rounds of DNA replication Involves two rounds of cell division OA process required for multicellular organisms to grow bigger. O A process that results in haploid gametes.arrow_forward
- Recombination through independent assortment and crossing over can occur in which of the following? Mitosis Meiosis II Meiosis I All of the abovearrow_forwardWithin the human body meiosis occur repeatedly producing gametes.Accidents during meiosis can alter chromosomes numbers.Identify the type of accident and briefly explain itarrow_forward. State where cells divide mitotically and where they divide meiotically in a fern, a moss, a flowering plant, apine tree, a mushroom, a frog, a butterfly, and a snail.arrow_forward
- During which of the following steps does is genetic diversity produced? Mark all that apply. During prophase of mitosis During prophase I of meiosis During prophase II of meiosis During anaphase I of meiosis During fertilizationarrow_forwardTable below presents the criteria to be used in comparing mitosis and meiosis. Provide the missing information CRITERIA MITOSIS MEIOSIS Presence of synapses presence of crossing over cell type that undergoes cell division number of daughter cells formed DNA content of cells at start of division DNA content of daughter cells genetic consequencesarrow_forwardWhich of the following correctly describes a homologous pair of chromosomes in prophase of meiosis I? a- Two replicated chromosomes, each of which is one double-stranded DNA molecule b- Four replicated chromosomes, each of which is one double-stranded DNA molecule c- Two replicated chromosomes, each of which is two double-stranded DNA molecules d- Four replicated chromosomes, each of which is two double-stranded DNA moleculesarrow_forward
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