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seen Dec 8 '13 at 16:58

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
comment What is the difference between “lineage restriction” and “differentiated” in terms of stem cell biology
So they are basically the same concept?
Dec
15
comment bi-directional transcription experiment
Both geneA and geneB have multiple exons. Transcript length-wise, both are around 2kb. Both have long introns resulting in a 4-5 kb total gene length.