15_test - Chapter15 1 The Chromosom alBasisof Inheritance...

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Chapter 15    1
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The  Chromosom al Basis of  Inheritance 1)  2
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When  Thomas  Hunt  Morgan crossed his red - eyed F 1  generation flies to each other, the F 2  generation included both red -  and  white - eyed flies. Remarkably, all the white - eyed flies were male. What was the explanation for this  result?  A) 
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The gene  involved is on the X chromosome.  B) 
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The gene  involved is on the Y chromosome.  C) 
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The gene  involved is on an autosome.  D) 
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Other male - specific factors influence eye color in flies.  E) 
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Other female - specific factors influence eye color in flies.  Answer:  
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Topic: 
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Concept 15.1  Skill: 
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Knowledge/Comp rehension
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2) 
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Morgan  and his  colleagues worked out a set of symbols to represent fly genotypes. Which of the following are  representative?  A) 
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AaBb   ×   AaBb  B) 
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46, XY or 46,  XX  C) 
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vg + vgse + se  × vgvgsese  D) 
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+ ×   + Answer:  
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Topic: 
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Concept 15.1  Skill: 
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Knowledge/Comp rehension
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3) 
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Sturtevant  provided  genetic evidence for the existence of four pairs of chromosomes in  Drosophila  in which of these ways?  A) 
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There are four  major functional classes of genes in  Drosophila B) 
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Drosophila  genes cluster into four distinct groups of linked genes.  C) 
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The overall  number of genes in  Drosophila  is a multiple of four.  D) 
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The entire  Drosophila  genome has approximately 400 map units.  E) 
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Drosophila  genes have, on average, four different alleles.  Answer:  
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Topic: 
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Concept 15.1  Skill: 
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Knowledge/Comp rehension 
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15_test - Chapter15 1 The Chromosom alBasisof Inheritance...

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