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garysgirl20 garysgirl20
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6 years ago
Garrod first proposed that:a.
   metabolic defects were due to the lack of an enzyme.
  b. metabolic defects were due to excess enzyme production.
  c. metabolic defects were due to chromosomal changes.
  d. mutations were heritable.
  e. metabolic defects did not occur in humans.

Question 2

Describe the distinguishing organisms and major biological events associated with the following geological time units.
  A. Precambrian time
  B. Paleozoic era
  C. Mesozoic era
  D. Cenozoic era What will be an ideal response?
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sdfaffsdfaff
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6 years ago
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garysgirl20 Author
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6 years ago
This is very helpful, my teacher this year is not good
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