Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 6, Problem 3QP
A colleague e-mails you saying that she has identified an interesting chromosome variation at 21q13. In discussing this discovery with a friend who is not a cytogeneticist, explain how you would describe this location, defining each term in the chromosome address 21q13.
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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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- Variations in Chromosome NumberAneuploidy Describe the process of nondisjunction and explain when it takes place during cell division.arrow_forwardThe genes that codes for the creation of certain blood groups are located on chromosome "XGp22.3", chromosome "12p12.3", chromosome "2q14.3", and so on. What is this chromosome terminology? What does it mean?arrow_forwardCould you please explain simple terms how does the base sequence contained in the telomeric regions of chromosomes differ from that found elsewhere in the chromosome?arrow_forward
- which characteristics would be noted when looking at isochromosomes when karyotyping chromosomes?arrow_forward. With regards to the grasshopper testes experiment, diakinesis is an ideal stage to determine chromosome number due to the degree of condensation of the chromosomes? Count the chromosomes at this stage. Does it represent a diploid or a haploid number?arrow_forwardA chromosome has the following segments, where • represents the centromere:A B C D E • F G What types of chromosome mutations are required to change this chromosome into each of the following chromosomes? (In some cases, more than one chromosome mutation may be required.) a. A B E • F G b. A E D C B • F G c. A B A B C D E • F G d. A F • E D C B G e. A B C D E E D C • F Garrow_forward
- An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B C D E F A • B C V W X R ST • U D E F R ST • U V W X Q. Draw the products of alternate, adjacent-1, and adjacent-2 segregations.arrow_forwardThe Y chromosome contains large amounts of constitutive heterochromatin. Why might there be more constitutive heterochromatin in the Y chromosome than in other chromosomes?arrow_forwardShow the exact location of the following gene in the chromosome. Draw and label. 2p32.1 2q42.2 2p21.3 2q12.3 2p11.2arrow_forward
- How many Barr bodies would you expect to see in a human cell containing the following chromosomes? a. XX b. XY c. XO d. XXY e. XXYY f. XXXY g. XYY h. XXX i. XXXXarrow_forwardA chromosome with the following gene order has a paracentric inversion of BCDE. A B C D E F • G H If a cross-over occurred between C and D, what would the resulting chromosomes look like?arrow_forwardIdentify centromere, duplicated and unduplicated chromosomes in the following diagram.arrow_forward
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