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seen Dec 8 '13 at 16:58

Dec
15
awarded  Yearling
Oct
2
comment Is evolution true as Darwin said?
@Smith. Speciation isn't so cut and dry as being able to mate. Reproductive isolation can exist in many forms. What about two animals that are able to reproduce and have viable offspring, but their reproductive organs have incompatible morphology so fertilization never naturally occurs? This would be a physical barrier to reproduction. Diane Dodd's fly experiment is similar, except that the animals have behavioural barriers. You accept that variation can happen. What makes you not accept that variation can lead to speciation? What kind of forces would prevent it?
Aug
27
asked potency in preformed germ-line
Aug
27
comment What is the difference between “lineage restriction” and “differentiated” in terms of stem cell biology
So they are basically the same concept?
Aug
26
asked What is the difference between “lineage restriction” and “differentiated” in terms of stem cell biology
May
22
awarded  Famous Question
Dec
15
awarded  Yearling
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14
awarded  Notable Question
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17
awarded  Popular Question
Mar
9
awarded  Nice Question
Jan
5
awarded  Scholar
Jan
5
accepted Why is DNA replication performed in the 5' to 3' direction?
Jan
4
asked Why is DNA replication performed in the 5' to 3' direction?
Dec
27
awarded  Enlightened
Dec
25
awarded  Nice Answer
Dec
24
awarded  Teacher
Dec
24
answered Why was it so hard to decode the corn genome?
Dec
15
awarded  Supporter
Dec
15
awarded  Editor
Dec
15
revised bi-directional transcription experiment
added 29 characters in body