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TLS Online TPP Program

#Question id: 28215

In the frog (Xenopus laevis) a gradient of the paracrine factor activin, which of the following observation is correct at the lower concentrations of activin ?

#Unit 5. Developmental Biology
  1. shows default gene expression instructed the cells to become blood vessels and heart
  2. activate the Xbra gene and instructed the cell to become muscle
  3. shows default gene expression instructed the cells to become muscle cells
  4. activate goosecoid gene and instructed the cell to become the frog’s dorsal-most structures
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TLS Online TPP Program

#Question id: 1409

#Unit 4. Cell Communication and Cell Signaling

Which DNA repair system is affected in patients with xeroderma pigmentosum?
TLS Online TPP Program

#Question id: 5112

#Unit 5. Developmental Biology

Inward movement of an expanding outer layer spreading over the internal surface during gastrulation is termed as
TLS Online TPP Program

#Question id: 7139

#Unit 5. Developmental Biology

If apoptosis in the developing limb were blocked, what feature of a normal limb would not form?
TLS Online TPP Program

#Question id: 13028

#Unit 13. Methods in Biology

The Vir gene responsible for transcription of other vir genes needed for ssDNA synthesis and endonuclease activity and transport to the plant cell is –
TLS Online TPP Program

#Question id: 23629

#Unit 13. Methods in Biology

Mechanical shearing is often the preferred method of fragmenting genomic DNA when constructing a genomic DNA library. Why would this method be preferred over complete digestion with restriction enzymes?