Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 10, Problem 15P
A normal chromosome and its homolog carrying a paracentric inversion are given. The dot (•) represents the centromere.
Normal ABC •DEFGHIJK
Inversion abc •djihgfek
Diagram the alignment of chromosomes during prophase I.
Assume a crossover takes place in the region between F and G. Identify the gametes that are formedfollowing this crossover, and indicate which gametes are viable.
Assume a crossover takes place in the region between A and B. Identify the gametes that are formed by this crossover event, and indicate which gametes are viable.
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Students have asked these similar questions
Changes in Chromosome Structure and Number
An inversion heterozygote has homologous chromosomes with the
following linkage arrangements:³
b
• а
b
e
a. What type of inversion is it?
b.
Draw the configuration of the chromosomes at synapsis of Prophase I.
a
с
f
d
e
d
f
с
g
c. If a four-strand double crossover occurs in the areas c-d (including
chromatids 2 and 3) and e-f (including chromatids 1 and 4), what are
the meiotic products?
d. Repeat for a three-strand double crossover c-d (chromatids 2 and 3),
and f-g (chromatids 1 and 3).
e. For both types of double crossovers will any of the meiotic products
be viable? If so which?
Inversions are known to affect crossing-over. The following homologs have the indicated order (the filled and open circles indicate centromeres):
• (A B C D E)
o (A D C B E)
b. Diagram the alignment of these chromosomes during meiosis.
An initial crossover event will occur between A and B, as indicated in the corresponding image. After this initial event occurs, a second crossover event occurs (not illustrated) involving the products of the first crossover event.
a. Given this chromosome organization, A B c, A b c, a B C, and a b C, which two chromatids of the bivalent were involved
chromatid 1
chromatid 2
chromatid 3
chromatid 4
and between which genes
gene A
gene B
gene C
did the second crossover event occur to produce the indicated chromosomes?
b. Returning to the original crossover depicted in the image, given this chromosome organization, A B C, A B C, a b c, and a b c, which two chromatids of the bivalent were involved
chromatid 1
chromatid 2
chromatid 3
chromatid 4
and between which genes
gene A
gene B
gene C
did the second crossover event occur to produce the indicated chromosomes?
Chapter 10 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 10 - 10.1 Give descriptions for the following...Ch. 10 - 10.2 The human genome contains contains base...Ch. 10 - In eukaryotic DNA, Where are you most likely to...Ch. 10 - 10.4 Describe the importance of light and dark G...Ch. 10 - Human late prophase karyotypes have about 2000...Ch. 10 - Prob. 6PCh. 10 - From the following list, identify the types...Ch. 10 - 10.8 If the haploid number for a plant species is...Ch. 10 - Mating between a male donkey (2n=64) and a female...Ch. 10 - A researcher interested in studying a human gene...
Ch. 10 - 10.11 In what way does position effect variegation...Ch. 10 - 10.12 A pair of homologous chromosomes in...Ch. 10 - 10.13 An animal heterozygous for a reciprocal...Ch. 10 - Dr. Ara B. Dopsis has an idea he thinks will be a...Ch. 10 - A normal chromosome and its homolog carrying a...Ch. 10 - The accompanying chromosome diagram represents a...Ch. 10 - 10.17 Histone protein isolated from pea plants...Ch. 10 - 10.18 A survey of organisms living deep in the...Ch. 10 - In humans that XX/XO mosaics, the phenotype is...Ch. 10 - 10.20 A plant breeder would like to develop the...Ch. 10 - In Drosophilia, seven partial deletion (1to7)...Ch. 10 - Two experimental varieties of strawberry are...Ch. 10 - 10.23 In the tomato, Solanum esculentum, tall ()...Ch. 10 - A boy with Down syndrome (trisomy 21) has 46...Ch. 10 - Experimental evidence demonstrates that the...Ch. 10 - Prob. 26PCh. 10 - Genomic DNA from the nematode worm...Ch. 10 - 10.28 A small population of deer living on an...Ch. 10 - A eukaryote with a diploid number of 2n=6 carries...Ch. 10 - Prob. 30PCh. 10 - For the following crosses, determine as accurately...Ch. 10 - A healthy couple with a history of three previous...
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