A. Underwinding of a B-DNA helix might facilitate or stabilize the formation of Z-DNA.

B. Underwinding aids in the transition by providing a local region of unwound DNA that allows the shift to Z-DNA.

C. Overwinding of a B-DNA helix might facilitate or stabilize the formation of Z-DNA.

D. Overwinding aids in the transition by providing a local region of unwound DNA that allows the shift to Z-DNA.

What is correct combination of statements

TLS Online TPP Program

#Question id: 5130

#Unit 5. Developmental Biology

Regulation by gradients of paracrine factor concentration was elegantly demonstrated by the specification of different mesodermal cell types in the frog Xenopus laevis by activin, a paracrine factor of the TGF-beta family. Which of the following observations are correct from this graph?

TLS Online TPP Program

#Question id: 1310

#Unit 4. Cell Communication and Cell Signaling

In some tissues subject to mechanical stress, special junctions which connect the cytoskeletons of adjacent cells.

TLS Online TPP Program

#Question id: 12460

#Unit 10. Ecological Principles

The realized niche of an organism is

TLS Online TPP Program

#Question id: 11280

#Unit 10. Ecological Principles

Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?

TLS Online TPP Program

#Question id: 24595

#Unit 2. Cellular Organization

Which of the following will show highest migratory distance on electrophoresis