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garysgirl20 garysgirl20
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6 years ago
When reconstructing a phylogeny and creating an evolutionary tree, scientists follow which of the following guidelines?
  1.The path with the greatest number of nucleotide sequence changes is selected.
  2.Data from outgroups are excluded so as not to bias the tree.
  3.The path with the fewest number of steps is the most likely to occur.
  4.The total number of differences between the groups must always be a constant within the tree.

Question 2

A molecular clock is based on which of the following genetic conditions?
  1.The stability of essential genes being highly conserved across species.
  2.The common use of genes and proteins over very long time periods.
  3.Accumulation of neutral mutations in a lineage.
  4.Large biochemical changes within a species.
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domsantos1998domsantos1998
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6 years ago
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garysgirl20 Author
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6 years ago
Were some really tough homework problems! Thanks for answering all of them correctly
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