Human Biology: Concepts and Current Issues Plus Mastering Biology with Pearson eText -- Access Card Package (8th Edition)
8th Edition
ISBN: 9780134042237
Author: Michael D. Johnson
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 15TY
Which of the following events or processes can result in Patau syndrome, Turner Syndrome, or Klinefelter syndrome?
a. nondisjunction
b. deletion of part of a chromosome
c. crossing-over
d. independent assortment
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Which statement about homologous chromosomes is FALSE?
Select one:
a. They contain the same genes in the same places along the length of the chromosome
b. One member of the homologous pair came from your mother, the other from your father
c. For a particular gene, one member of the pair may have one allele, while the other has a different allele
d. They are joined together at the centromere as the two halves of the typical X-shaped chromosome
Change in chromosome numbers will lead to abnormalities. Which of the following is a correct match between the chromosome number and the syndrome?
A.
Trisomy 18 : Patau syndrome
B.
Monosomy 18 : Turner syndrome
C.
XXXY : Klinefelter syndrome
D.
Trisomy 21 : Edward syndrome
A geneticist determines that the order of four genes on a specific chromosome is CABD because the recombination frequencies were 35% for C-D, 24% for A-D, 23% for B-D, and 10% for A-B. What has the geneticist constructed?
Chapter 19 Solutions
Human Biology: Concepts and Current Issues Plus Mastering Biology with Pearson eText -- Access Card Package (8th Edition)
Ch. 19 - If you might be a carrier of a gene for an...Ch. 19 - Prob. 2QCCh. 19 - Prob. 1CRCh. 19 - Prob. 2CRCh. 19 -
3. Distinguish between genotype and phenotype.
Ch. 19 - Describe the contributions of Mendel to the field...Ch. 19 - Explain how alterations of chromosome number and...Ch. 19 - Prob. 6CRCh. 19 - Prob. 7CRCh. 19 - Describe what is meant by sex-linked inheritance.
Ch. 19 -
9. Explain why lethal diseases caused by dominant...Ch. 19 - Prob. 10CRCh. 19 - All of the following statements about homologous...Ch. 19 - Prob. 2TYCh. 19 -
3. Which of the following statements correctly...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Which of the following results in the separation...Ch. 19 - Prob. 9TYCh. 19 - Prob. 10TYCh. 19 - What tool is used to determine the probabilities...Ch. 19 - Prob. 12TYCh. 19 - What is the basis for the tremendous genetic...Ch. 19 - Prob. 14TYCh. 19 -
15. Which of the following events or processes...Ch. 19 -
1. What fraction of the offspring of two...Ch. 19 -
2. Why is it that the range of resting blood...Ch. 19 - Prob. 3AWKCh. 19 - Geneticists often study patterns of gene transfer...Ch. 19 - Prob. 5AWKCh. 19 - Prob. 6AWKCh. 19 - Nondisjunction during meiosis can lead to the...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A boy with Down syndrome (trisomy 21) has 46 chromosomes. One parent and his two older sisters have a normal phenotype, but each have 45 chromosomes. a)Explain how this is possible. b)How many chromosomes do you expect to see in karyotypes of the parents? c)What term best describes this kind of chromosome abnormality? d)What is the probability the next child of this couple will have a normal phenotype and have 46 chromosomes? Explain your answer.arrow_forwardLocus heterogeneity means that a genetic disordera. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parentsarrow_forwardA geneticist determines that the order of four genes on a specific chromosome is CABD because the recombination frequencies were 35% for C-D, 24% for A-D, 23% for B-D, and 10% for A-B. What has the geneticist constructed? A. a physical map B. a karyotype C. a cytogenic map D. a linkage maparrow_forward
- A change in chromosome structure that does not involve a change in the total amount of genetic material is?a. a deletion. b. a duplication. c. an inversion.d. none of the above.arrow_forwardMatch the pictures of the small-scale chromosome changes to the terms. A) translocation B) deletion C) inversion D) duplicationarrow_forwardA research scientist is studying diseases associated with homologous chromosomes and notices that the same gene along the chromosome has different function what can you conclude about his findings? A. The homologous pairs have been recombined and therefore he is studying end joining of chromosomes B. He is studying sex chromosomes and the differences are because the chromosomes are from a male species organism C. He has identified different alleles among homologous chromosomes. D. He is studying basic chromosome remodeling during fertilzationarrow_forward
- In 1-3 sentences: define the term and the relationship between the terms (a) Deletion (b) Duplication (c) Reciprocal and Robertsonian translocations (d) Inversionarrow_forwardIn a sample of 1000 patients with Down syndrome, a geneticist discovers that 95% of them are trisomic, while 5% have diploid number of chromosomes. Explain this discrepancy.arrow_forwardWhy is random assortment of chromosomes necessary? What can we expect if this does not occur?arrow_forward
- The physical cause of the law of independent assortment for genes on the same chromosome is which of the following? Group of answer choices A. crossing over B. separation of homologous chromosomes in mitosis C.separation of sister chromatids in mitosis D. separation of sister chromatids in meiosis E. separation of homologous chromosomes in meiosisarrow_forwardThe set of specific alleles on a single chromosome is known as what? a. A phenotype b. Diploidy c. A genetic locus d. A haplotypearrow_forwardLocus heterogeneity refers to a genetic disorder thata. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents.arrow_forward
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