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TLS Online TPP Program

#Id: 6695

Deamination of the human apolipoprotein B mRNA takes place by an enzyme called APOBEC1



#Unit 3. Fundamental Processes #Capping, Polyadenylation, Splicing and Alternative splicing #Part B Pointers
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TLS Online TPP Program

#Id: 2350

#Unit 5. Developmental Biology

Planarian flatworms can reproduce asexually by binary fission, during which they split themselves in half.
TLS Online TPP Program

#Id: 2351

#Unit 5. Developmental Biology

If the planarian is cut in half, the anterior portion of the lower half regenerates a head while the posterior of the upper half regenerates a tail. 
TLS Online TPP Program

#Id: 2352

#Unit 5. Developmental Biology

If a flatworm is cut into three pieces, the middle piece will regenerate a head from its anterior end and a tail from its posterior end.
TLS Online TPP Program

#Id: 2353

#Unit 5. Developmental Biology

If the middle slice is too narrow, there is no discernible morphogen gradient within it, and regeneration is abnormal.
TLS Online TPP Program

#Id: 2354

#Unit 5. Developmental Biology

Cells capable of stem cell mediated regeneration are the same pluripotent stem cells that repair and replace body parts.
TLS Online TPP Program

#Id: 2355

#Unit 5. Developmental Biology

Regeneration blastema forms from pluripotent stem cells called clonogenic neoblasts (cNeoblasts).