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Home Q & A Board Biology-Related Homework Help General Biology
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juhuyh juhuyh
wrote...
Posts: 526
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6 years ago
Repressor proteins
  a. prevent binding of RNA polymerase to DNA.
  b. cause the DNA regions that contain the operator
  to twist or loop.
  c. inactivate operon genes when their products are
  not required.
  d. bind to sets of operators.
  e. do all of these.

Question 2

Genes located in cells in different regions of the
  body during embryonic development may
  a. be turned on and off.
  b. never be turned on.
  c. be turned on and left on.
  d. be activated for only a short time in one cell and
  a long time in another cell.
  e. do all of these.
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Replies
wrote...
#1
6 years ago
Answer to q. 1

Answer: e

Answer to q. 2

Answer: e
juhuyh Author
wrote...
#2
6 years ago
This is very helpful, my teacher this year is not good
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