Campbell Biology: Concepts & Connections, 9e, Access Code
9th Edition
ISBN: 9780134536262
Author: Taylor
Publisher: PEARSON
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Chapter 8, Problem 6TYK
If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called
a. a deletion.
b. an inversion.
c. a translocation.
d. a nondisjunction.
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Students have asked these similar questions
In a college genetics laboratory course, a healthy student constructs a karyotype from a cell from inside her cheek. She finds only one chromosome 3 and one chromosome 21, plus two unusual chromosomes that do not seem to have matching partners.
a. What type of chromosomal abnormality does she have?
b. Why doesn’t she have any symptoms?
c. Would you expect any of her relatives to have particular medical problems?
A 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 fertilzation
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
Chapter 8 Solutions
Campbell Biology: Concepts & Connections, 9e, Access Code
Ch. 8 - Complete the following table to compare mitosis...Ch. 8 - If an intestinal cell in a grasshopper contains 24...Ch. 8 - Which of the following is not a function of...Ch. 8 - It is difficult to observe individual chromosomes...Ch. 8 - A fruit fly somatic cell contains 8 chromosomes....Ch. 8 - If a fragment of a chromosome breaks off and then...Ch. 8 - Which of the following phases of mitosis is...Ch. 8 - A biochemist measured the amount of DNA in cells...Ch. 8 - A micrograph of a dividing cell from a mouse...Ch. 8 - Cytochalasin B is a chemical that disrupts...
Ch. 8 - Why are individuals with an extra chromosome 21,...Ch. 8 - In the light micrograph below of dividing cells...Ch. 8 - An organism called a plasmodial slime mold is one...Ch. 8 - Prob. 14TYKCh. 8 - Discuss the factors that control the division of...Ch. 8 - Compare cytokinesis in plant and animal cells. In...Ch. 8 - Sketch a cell with three pairs of chromosomes...Ch. 8 - Suppose you read in the newspaper that a genetic...Ch. 8 - Bacteria are able to divide on a faster schedule...Ch. 8 - Prob. 20TYKCh. 8 - A mule is the offspring of a horse and a donkey. A...Ch. 8 - What you think of as a banana is a Cavendish, one...Ch. 8 - SCIENTIFIC THINKING The study described in Module...
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- What are homologous chromosomes? a. The two halves of a replicated chromosome b. Two identical chromosomes from one parent c. Two genetically identical chromosomes, one from each parent d. Two genetically similar chromosomes, one from each parentarrow_forward"If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the resulting chromosomal abnormality is called a translocation." The above statement is True or False? and Explainarrow_forwardWhich types of chromosome mutations a. increase the amount of genetic material in a particular chromosome? b. increase the amount of genetic material in all chromosomes? c. decrease the amount of genetic material in a particular chromosome? d. change the position of DNA sequences in a single chromosome without changing the amount of genetic material? e. move DNA from one chromosome to a nonhomologous chromosome?arrow_forward
- What change in chromosome structure causes an extra copy of a chromosomal region to occur? A. Duplication B. Inversion C. Simple translocation D. Deletion E. Reciprocal translocationarrow_forwardA. Aneuploidy refers to the loss or gain a chromosome part. B. Polyploid cells have extra chromosome sets. A) Both statement is correct B) Both statement is incorrect C) First statement is correct, Second is incorrect D) First statement is incorrect, Second is correctarrow_forwardWhich of the following would have the shortest p arm of the chromosome? A) acrocentic B) metacentric C) submetacentric D) all of the answers would be equalarrow_forward
- (a) A person with Down syndrome. She has 47 chromosomes rather than the common number of 46, because she has an extra copy of chromosome 21. (b) A wheat plant. Cultivated wheat is derived from the contributions of threewild species with two sets of chromosomes each, producing an organismwith six sets of chromosomes.Do these examples constitute variation in chromosomestructure or variation in chromosome number?arrow_forwardChromosome translocations include: A. Alterations in which the genetic material remains the same but rearranged B. Alterations in which the total amount of genetics information increases C. Alterations in which the total amount of genetics information decreases D. Variations in the chromosome numberarrow_forwardWhich of the following is a FALSE statement regarding human chromosomes? A. The chromosome number in humans is 2n=46. B. Gametes have half number of the chromosomes as in somatic cells. C. There are 22 pairs of autosomes and 2 sex chromosomes. D. Liver cells can be polyploids. They can have 23, 46, 69 or 92 chromosomes.arrow_forward
- Describe how errors in chromosome structure occur through inversions and translocationsarrow_forwardThere are 46 chromosomes in humans, of which A. any 23 chromosomes are from father and remaining from the mother B. the first 11 pairs and 'X' are from the father and next 11 pairs and 'Y' from the mother C. the first 11 pairs and 'X' from mother and remaining from father D. out of each pair one is received from the father and the other from the motherarrow_forwardwhat are chromosome bands and why are they importantarrow_forward
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