Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Textbook Question
Chapter 16.2, Problem 1C
- • VISUALIZE Draw a simple sketch illustrating how nondisjunction in meiosis can lead to Down syndrome.
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In your own words:
•Explain the process of Mitosis
•Explain the Process of Meiosis
Genetic problems:
Use the diagram below to figure out how each monosomy or trisomy can
a) Normal X chromosome
segregation
b) Nondisjunction in
meiosis I
c) Nondisjunction in
meiosis II
Diploid cell at start of
meiosis
First meiotic division
Nondisjunction
Second meiotic
division
Nondisjunction
00 00
develop.
Benjamim
XCuinmi
х Х х х
Xх хх о о
XX O
2. A color-blind man married a normal woman. Their daughter, who was phenotypically normal, married
a normal man and the couple produced three children, a normal boy, a color-blind boy, and a color-blind
girl. Further examination indicates that this girl has two X chromosomes. Explain the origin of the color-
blind girl.
Give a detailed description of all the phases of meiosis
Chapter 16 Solutions
Biology (MindTap Course List)
Ch. 16.1 - Distinguish between karyotyping and pedigree...Ch. 16.1 - Prob. 2LOCh. 16.1 - Prob. 3LOCh. 16.1 - Prob. 1CCh. 16.1 - Prob. 2CCh. 16.1 - Describe two ways in which genome database...Ch. 16.1 - Prob. 4CCh. 16.2 - Explain how nondisjunction in meiosis is...Ch. 16.2 - Distinguish among the following structural...Ch. 16.2 - Prob. 6LO
Ch. 16.2 - VISUALIZE Draw a simple sketch illustrating how...Ch. 16.2 - Prob. 2CCh. 16.2 - Prob. 3CCh. 16.2 - Prob. 4CCh. 16.3 - State whether each of the following genetic...Ch. 16.3 - Which of the following genetic diseases is/are...Ch. 16.3 - Prob. 2CCh. 16.3 - Prob. 3CCh. 16.4 - Briefly discuss the process of gene therapy,...Ch. 16.4 - Prob. 1CCh. 16.5 - State the relative advantages and disadvantages of...Ch. 16.5 - Distinguish between genetic screening programs for...Ch. 16.5 - Prob. 1CCh. 16.5 - Prob. 2CCh. 16.6 - Prob. 11LOCh. 16.6 - Prob. 1CCh. 16.6 - CONNECT To be expressed, an autosomal recessive...Ch. 16.6 - Prob. 3CCh. 16 - Prob. 1TYUCh. 16 - An abnormality in which there is one more or one...Ch. 16 - The failure of chromosomes to separate normally...Ch. 16 - Prob. 4TYUCh. 16 - Prob. 5TYUCh. 16 - Prob. 6TYUCh. 16 - Prob. 7TYUCh. 16 - Prob. 8TYUCh. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Examine the following pedigrees. Which is the most...Ch. 16 - Prob. 11TYUCh. 16 - SCIENCE, TECHNOLOGY, AND SOCIETY Imagine that you...Ch. 16 - A common belief about human genetics is that an...Ch. 16 - Prob. 14TYUCh. 16 - EVOLUTION LINK Explain some of the evolutionary...
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- Briefly describe nondisjunction in meiosis and identify several potential consequences. In other words, what are the possible outcomes?arrow_forwardVISUALIZE Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells: (a)How a pair of alleles for a single locus segregate in meiosis (b)How the alleles of two unlinked loci assort independently in meiosis (c)How the alleles of two linked loci undergo genetic recombinationarrow_forward• When do chiasmata develop during meiosis? (Please be specific!)• How do chiasmata affect chromosomes?• Explain how the development of chiasmata leads to genetic variation in meiotic cells.arrow_forward
- mat Arrange Tools Slide Show Window Help A 12% D Sat 2:02 PM 2 Chapter 13 clicker questions imations Slide Show Review View Shape Format O Tell me e Share V Play Narrations Always Use Subtitles V Use Timings Rehearse Record Timings Slide Show V Show Media Controls A Subtitle Settings v What allows sister chromatids to finally separate, and in which phase of meiosis does this occur? a) release of cohesin along sister chromatid arms in anaphase I b) crossing over of chromatids in prophase I c) release of ohesin at centromeres in anaphase I d) release of cohesin at centromeres in anaphase II e) crossing over of homologs in prophase I O 2017 Pearson Education, Inc 103% :: E Notes Comments étv MacBook Pro 80 888 * ( & $ 8 9 6 7arrow_forwardDescribe how reciprocal translocations align during meiosis and how they segregate.arrow_forwardWhich statement does not accurately describe what occurs during the process of meiosis? A) All stages of meiosis follow DNA replication. B) Meiosis produces gametes with the haploid chromosome number. C) Meiosis produces four identical gametes, either egg or sperm. D) Genetic variation among sexually reproducing organisms is enhanced by meiosis. Not Gradedarrow_forward
- 2) Meiosis and sexual reproduction are, in large part, responsible for genetic variation within a population. Meiosis supports genetic variation in several ways. All BUT ONE applies to meiosis, sexual reproduction and genetic variation. A) Meiosis is preceded by DNA replication of chromosomes in the nucleus of the mother cell. B) As seen in the diagram, during meiosis crossing over, or swapping of DNA segments, may occur. C) During fertilization each parent randomly contributes a unique set of chromosomes to the zygote. D) Because of recombination and independent assortment during meiosis, each of the four gametes contains a different set of DNA. Not Gradedarrow_forwardWrite short notes on the following: - The four basic types of chromosomal structure arrangements? - Aneuploidy illustrating non-disjunction in meiosis I and IIarrow_forward..explain why meiosis occurs only in specialized cells (gametes), and that the overall goal of meiosis is to make haploid cells for sexual reproduction • ..outline the sequence of key chromosomal movements and rearrangements during the two meiotic divisions, identifying key similarities and differences between meiosis and mitosis • ..describe the ploidy of a cell before and after meiosis I and meiosis II, and how ploidy changes after separation of sister chromatids and homologous chromosomesarrow_forward
- Draw the distribution of DNA (one set of homologous chromosomes) during meiosis. What happens in Meiosis I (prophase I, Metaphase I, Anaphase I and Telophase I and interkinesis) and in Meiosis II (prophase II, Metaphase II, Anaphase II and Telophase II and interkinesis).arrow_forwardThe four daughter cells pictured below resulted from: A) normal mitosis B) fertilization with a normal sperm C) normal meiosis D) meiosis with nondisjunction during meiosis I E) meiosis with nondisjunction during meiosis IIarrow_forwardOn the three horizontal lines in the center, label the following stages of Meiosis:Metaphase I, Metaphase II and gametes. • In the top left circle, draw Metaphase I of Meiosis for a cell that is 2n=4 (two large and two small chromosomes). 1) Draw chromosomes as an X or /, not decondensed. 2) Since we are focusing on the DNA, do not draw the nuclear membrane or spindle fibers. 3) For simplicity, do not indicate crossover in your diagrams. 4) Use different colors for each "set" of information (one large and one small chromosome). 5) Using the same genes/alleles as DTL 15 & 16, mark gene locations and label them in each cell. 6) Make sure you show that homologous chromosomes are the same size and sister chromatids are identical. • On the right side of the line, draw the second way homologs could line up Metaphase 1. Make sure that homologs are paired, just flip one of the pairs. ● Draw the resulting chromosomes in Metaphase II and gametes. Notice that there are four types of gametes. In…arrow_forward
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