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Home Q & A Board Biology-Related Homework Help General Biology
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lacieb23 lacieb23
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6 years ago
The genetic variation that exists among humans is mainly due to the differences that exist within their ________.
 
  a. alleles
 b. ribosomes
 c. parents
 d. cell membranes
 e. cells

Question 2

Chemical evolution may have become relatively sophisticated before cells first arose in ________.
 
  a. hydrothermal vents and on clay particles in shallow mud flats
 b. nebulae
 c. algal mats and stromatolites
 d. hydrothermal vents and stromatolites
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mtmt
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6 years ago
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lacieb23 Author
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#2
6 years ago
Brilliant
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