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Home Q & A Board Biology-Related Homework Help General Biology
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megandunlap megandunlap
wrote...
Posts: 509
Rep: 2 0
6 years ago
Adaptive evolution is constrained because natural selection acts on
  1.traits an animal needs to acquire in order to survive.
  2.existing genetic variation only.
  3.existing genetic variation plus new mutations.
  4.All of the options are correct.

Question 2

Sickle cell anemia is an example of
  1.founder effect.
  2.a genetic bottleneck.
  3.heterozygote advantage.
  4.genetic drift.
  5.gene pools.
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Replies
wrote...
#1
6 years ago
Answer to q. 1

3

Answer to q. 2

3
megandunlap Author
wrote...
#2
6 years ago
Wow! Thanks you for this correct set of answers, wasn't expecting it...
wrote...
#3
6 years ago
My pleasure!
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