Which of the following statements best explains why humans have such a poor sense of smell compared to other mammals?

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Their olfactory bulb is smaller than that in other mammals.

  

About half of their odor-receptor genes are not functional.

  

They have fewer odor-receptor proteins than other mammals.

  

They have fewer glomeruli than other mammals.

 

asked Jan 1, 2013 in Biology by anonymous
    

1 Answer

0 votes

 

About half of their odor-receptor genes are not functional.

 

answered Jan 1, 2013 by anonymous



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