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Home Q & A Board Biology-Related Homework Help General Biology
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Thisisdumb Thisisdumb
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6 years ago
Male mallards have had emerald green head feathers
  and wings with metallic blue patches for hundreds of
  years, whereas female mallards have been drab,
  brown-feathered ducks. This phenotypic situation
  suggests that mallards may be an example of
  a. directional selection.
  b. polyploidy.
  c. allopatric speciation.
  d. disruptive selection.
  e. sexual selection

Question 2

This graph shows both human birth weight and
  newborn infant mortality. The most common birth
  weight is between seven and eight pounds. Human
  birth weight seems to be an example of
  a. directional selection.
  b. stabilizing selection.
  c. sexual selection.
  d. disruptive selection.
  e. artificial selection.
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DunkinJrDunkinJr
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6 years ago
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Thisisdumb Author
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#2
6 years ago
You are really a genius. Thanks
wrote...
#3
6 years ago
NP
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