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(Solved) 1.Which gene would you expect to have the fastest rate of evolution?


 

1.Which gene would you expect to have the fastest rate of evolution?  

  1. phosphofructokinase - involved in glycolysis                               
  2. RNA polymerase II - involved in transcription                             
  3. DNA polymerase III - involved in DNA replication                     
  4. vesicular glutamate transporter 2 - involved in transport of glutamate into synaptic vesicles within neurons of the thalmus     
  5. ATP synthase - involved in respiration

 

2. Portions of the genome with _____ are the best regions to use for DNA typing (paternity tests, crime scene forensics).          

  1. SNPs                      
  2. regulatory regions                               
  3. alternative splicing                             
  4. highly conserved genes                      
  5. short tandem repeats

 

3._____ means that mating pairs are formed without regard to genotype: two genotypes mate in proportion to their relative frequencies in the population.    

  1. inbreeding            
  2. testcrossing                          
  3. assortative mating                              
  4. random mating                   
  5. backcrossing

 

4. If an allele is rare, it is found mostly in ___________ genotypes.

                               

  1. hemizygous         
  2. heterozygous       
  3. x-linked
  4. homozygous        
  5. y-linked

5. In a population with two alleles, B and b, the frequency of b is 0.56. What would be the frequency of the heterozygotes, assuming Hardy-Weinberg equilibrium?          

A. 0.49  

B. 0.71  

C. 0.36  

D. 0.31  

E. 0.55

 

6. If an X-linked disease results from a rare recessive allele,

A. There will be more females exhibiting the trait than males.

B. Among females there will be more affected than carriers.    

C. All sons of affected males will be affected.             

D. The frequency of affected males and females will be equal.               

E. There will be more males exhibiting the trait than females.

 

7. RNA polymerase II in humans and RNA polymerase II in spider monkeys are examples of _____.                          

A. paralogous genes                           

B. orthologous genes                          

C. rapidly evolving genes                  

D. pseudogenes                   

E. alleles of the same gene

 

8. If in a population in Hardy-Weinberg equilibrium the frequency of homozygous recessive genotype is 0.16, then the frequency of the dominant allele will be

A. 0.84

B. 0.16

C. 0.026

D. 0.4    

E. 0.6


 

9. A trait caused by a recessive X-linked allele in a large, randomly mating population affects 1 male in 10. What is the frequency of affected females?              

A. 1 in 100,000   

B. 1 in 1,000        

C. 1 in 100           

D. 1 in 10              

E. 1 in 10,000


10. Which type of DNA sequence would you expect to evolve the slowest?          

  1. nonsynonymous sites in an exon    
  2. synonymous sites in an exon           
  3. pseudogenes        
  4. introns   
  5. regulatory regions

11. A population having an allele frequency of 1.0 for some allele is said to be _____ for that allele.

                               

  1. frequent
  2. homozygous        
  3. lost         
  4. fixed      
  5. inbred

12. In a population in Hardy-Weinberg equilibrium, the frequency of the allele for albinism is 0.09. What percentage of the population is homozygous for this allele?

A. 0.8% 

B. 0.09%              

C. 0.16%              

D. 0.91%              

E. 0.045%


13. Inbreeding results in

A. Increased frequency of rare recessive alleles

B. Increased frequency of homozygotes       

C. Increased frequency of dominant alleles 

D. Increased frequency of heterozygotes

 


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