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Home Q & A Board Biology-Related Homework Help Cell Biology
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Darkflower73 Darkflower73
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6 years ago
Which of the following does not affect the evolution of a group of organisms?
 
  A. genetic drift
  B. mutation rates
  C. mating
  D. migration
  E. natural selection


Describe two important interactions that occur between the nitrogenous bases of nucleic acids.
 
  What will be an ideal response?


When cysteine-tRNAcys is treated with nickel hydride, alanine-tRNAcys is the product. Alanine-tRNAcys will base pair with which codon?
 
  insert Figure TB17.1 here
 
  A. UGC
  B. GCU
  C. AUG
  D. AGU


What experiment led to an understanding by Kornberg that DNA acted as a template for DNA synthesis?
 
  What will be an ideal response?


The values (e.g., 80 or 100) noted on the branches of an evolutionary tree reflect:
 
  A. how similar an individual taxa is to the extinct ancestor at the node of the branch.
  B. how similar an individual taxa is to the common ancestor at the root of the tree.
  C. the confidence the investigator has in the information contained in that branch.
  D. the percentage of species in that branch.
  E. the number of genes used to determine the relationship displayed in the tree.
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Kbramblett8Kbramblett8
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Darkflower73 Author
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6 years ago
Oh my goodness! Your post was awesome!
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