Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 6QP
Discuss the following sets of terms:
- a. trisomy and triploidy
- b. aneuploidy and polyploidy
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Discuss the following sets of terms:
a) trisomy and triploidy,
b) aneuploidy and polyploidy.
Compare the following three terms: polyploidy, aneuploidy, and nondisjunction. Briefly discuss examples of each of these conditions.
When n equals ABC, AAAABBBBCCCC is:
a.
trisomic
b.
tetraploid
c.
tetrasomic
d.
triploid
Chapter 6 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 6 - Genetics in Practice case studies are...Ch. 6 - Genetics in Practice case studies are...Ch. 6 - Analyzing Karyotypes 1. Originally, karyotypic...Ch. 6 - Given the karyotype shown at right, is this a male...Ch. 6 - A colleague e-mails you saying that she has...Ch. 6 - What are the two most commonly used methods of...Ch. 6 - Prob. 5QPCh. 6 - Discuss the following sets of terms: a. trisomy...Ch. 6 - What chromosomal abnormality can result from...Ch. 6 - Tetraploidy may result from: a. lack of...
Ch. 6 - A cytology student believes he has identified an...Ch. 6 - An individual is found to have some tetraploid...Ch. 6 - A spermatogonial cell undergoes mitosis before...Ch. 6 - A teratogen is an agent that produces nongenetic...Ch. 6 - As a physician, you deliver a baby with protruding...Ch. 6 - Variations in Chromosome NumberAneuploidy Describe...Ch. 6 - A woman gives birth to monozygotic twins. One boy...Ch. 6 - Assume that a meiotic-nondisjunction event causes...Ch. 6 - Prob. 17QPCh. 6 - What is the genetic basis and phenotype for each...Ch. 6 - The majority of nondisjunction events leading to...Ch. 6 - Prob. 20QPCh. 6 - If all the nondisjunction events leading to Turner...Ch. 6 - Identify the type of chromosomal aberration...Ch. 6 - Describe the chromosomal alterations and phenotype...Ch. 6 - A geneticist discovers that a girl with Down...Ch. 6 - Albinism is caused by an autosomal recessive...Ch. 6 - Fragile-X syndrome causes the most common form of...
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- Explain the terms: (a) aneuploidy, (b) polyploidy.arrow_forwardUse 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 Nondisjunction First meiotic division Second meiotic division Nondisjunction 00 00 00 PEARS N develop. Benjamin XCummixes х х х х XX XX о о XX 1. 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 with Turner syndrome. Explain the origin of the color-blind girl with Turner syndrome.arrow_forwardA diploid organism produces four gametes from one parent cell through the process of meiosis. Two gametes are found to have 7 chromosomes and two gametes are found to have 5 chromosomes. A) Is this the expected number of chromosomes that would be found in each gamete following a normal cycle of meiosis? If yes, explain why. If no, explain why not and describe how the gamete situation described above occurred. B) Determine the number of homologous chromosome pairs that the original parent cell contained, before meiosis began. Explain how you determined this value.arrow_forward
- In the following diagram, designate each daughter cell as diploid (2n) or haploid (n).arrow_forwardMatch the following: A duplicated chromosome is made of 2.A maternal and paternal chromosome present together, each with two sister chromatids 3.Semi-condensed DNA made up of coiled nucleosomes. 4.Super-coiled DNA strands. 5.Contains only one copy of each chromosome. 6.Name of an error during meiosis resulting in fewer chromosomes than normal in a zygote or individual (2n-1) 7.General term for an error resulting in the incorrect number of chromosomes in a gamete after meiosis 8.A specific version of a gene, such as blue eye colour 9.A region on a chromosome that codes for a protein 10.Region where chromosomes are attached 11.None of the above (should be selected more than once) with monosomy trisomy aneuploidy centromere gene sister chromatids diploid Haploid tetrad telomere Chromosomes Chromatin allelearrow_forwardA diploid species has 3 pairs of chromosomes in the somatic cells. In males, the first pair is large submetacentric; the second is medium acrocentric, and the third is small telocentric. In females, the first two pairs are like those of the males while the third is large metacentric with satellite. Illustrate the karyograms of the following: a. A triploid cell in femalesb. tetrasomic cell in malesc. tetraploid cell in femalesarrow_forward
- Distinguish the following: euploidy, aneuploidy, and polyploidy; monosomy and trisomy.arrow_forwardAll of the following cells, shown in various stages of mitosis and meiosis, come from the same rare species of plant. a. What is the diploid number of chromosomes in this plant? b. Give the names of each stage of mitosis or meiosis shown. c. Give the number of chromosomes and number of DNA molecules per cell present at each stage.arrow_forwardDefine aneuploidy.how is it different from polyploidy?arrow_forward
- Compare an autotetraploid and an allotetraploid to each other with respect to the characteristics listed below. Answer auto, allo, both or neither for each statement. a) Balanced and unbalanced gametes can form.b) Contains 4 homologous copies of every chromosome.c) Originated from 2 different ancestral diploid species.d) Fully fertile.arrow_forward2) A. Explain how polyribosomes form. B. Why might you expect the insertion of 3 DNA base pairs to be less disruptive than th deletion of a single base pair? C. Compare and contrast mitosis and meiosis with respect to their genetic outcomes? D. What are the possible consequences of non-disjunction during cell division? E. How does meiosis increase genetic diversity in populations?arrow_forwardWhich of the following is true of polyploidy?arrow_forward
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