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peeeps peeeps
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6 years ago
Which of the following is one way in which the environment may play a role in development?
 
  a. The environment changes the segments in which Hox genes are expressed.
  b. The presence or absence of neural crest cells in different species is environmentally deter-mined.
  c. The environment directly induces gene duplications
  d. Environmental conditions may change the timing of developmental changes.
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6 years ago
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