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buttssss buttssss
wrote...
Posts: 548
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6 years ago
A molecular clock is based on
 
  a. measurement of daylength by pigment complexes.
  b. daily changes in amino acid sequence in specialized proteins.
  c. regulation of the order in which genes are turned on.
  d. precise oscillations of atoms in a crystal.
  e. a constant rate of mutation in DNA sequences.

Question 2

On a cladogram, branches represent
 
  a. common ancestors.
  b. groups of organisms that share a common ancestor.
  c. distinguishing characters.
  d. common characters.
  e. extinct species.
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Replies
wrote...
6 years ago
Answer to q. 1

C

Answer to q. 2

B
buttssss Author
wrote...
6 years ago
I'm still confused, but thanks for answering correctly
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