Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Chapter 15, Problem 2CQ
Summary Introduction
To identify: The copies of the OCA2 gene that influences eye color in humans.
Introduction: A karyotype helps in the identification of number, form, and size of chromosomes present within an actively dividing cell. Scientists discovered that eukaryotic chromosomes occur in sets by studying the karyotype of various species. The cells are treated with drugs before studying or making a karyotype.
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Below are two pictures of perithecium on microscope slides that have been squished under cover slips so that the asci inside have spread
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analysis by counting how many of the asci are non-recombinant and how many of the acsi are recombinant. We can tell which are
recombinant and non-recombinant by observing the patterns of the ascospores in the asci. See the patterns of ascospores for non-
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non-recombinant asci
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You will count the total number of non-recombinant and recombinant asci in the two pictures below. You will only count the asci that
have a star next to them because these asci can be clearly identified as non-recombinant or recombinant. Select the correct number
below after you are done.
Total number of non-recombinant asci [Select]
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Figure 1 is a photography obtained after spreading the replicating Escherichia coli chromosome
and its observation by transmission electron microscopy. An interpretation scheme of the
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Figure 1: Photography of a replicating
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A blood stain from a crime scene and blood samples from four suspects were analyzed by PCR using fluorescent primers associated with three STR loci: D3S1358, vWA, and FGA. The resulting electrophoretograms are shown below. The numbers beneath each peak identify the allele (upper box) and the height of the peak in relative fluorescence units (lower box). Solve, (a) Since everyone has two copies of each chromosome and therefore, two alleles of each gene, what accounts for the appearance ofonly one allele at some loci? (b) Which suspect is a possible source of the blood? (c) Could the suspect be identifi ed using just one of the three STR loci? (d) What can you conclude about the amount of DNA obtained from Suspect 1 compared to Suspect 4?
Chapter 15 Solutions
Biology
Ch. 15.1 - Researchers usually treat cells with drugs that...Ch. 15.1 - Which phases make up interphase?Ch. 15.1 - Prob. 1BCCh. 15.1 - Prob. 1EQCh. 15.1 - The Eukaryotic Cell Cycle CoreSKILL What...Ch. 15.1 - Prob. 3EQCh. 15.2 - Prob. 1CCCh. 15.2 - Prob. 2CCCh. 15.2 - Mitotic Cell Division Concept Check: What are the...Ch. 15.3 - Prob. 1CC
Ch. 15.3 - Sexual Reproduction Concept Check: What is the...Ch. 15.4 - Variation in Chromosome Structure and Number...Ch. 15 - Prob. 1TYCh. 15 - Prob. 2TYCh. 15 - Prob. 3TYCh. 15 - Prob. 4TYCh. 15 - Prob. 5TYCh. 15 - Which of the following is not an event of anaphase...Ch. 15 - Prob. 7TYCh. 15 - Which of the following statements accurately...Ch. 15 - Prob. 9TYCh. 15 - Aneuploidy may be the result of a. duplication of...Ch. 15 - Prob. 1CQCh. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 1COQCh. 15 - A diploid eukaryotic cell has 10 chromosomes (5...
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