What is correct about Klenow fragment

A. is a single polypeptide of 103 kD

B. larger cleavage product of DNA Pol I of 68 kD

C. It contains the polymerase activity

D. It contains the 3’-5’ exonuclease activity

E. It contains the 5’-3’ exonuclease activity

TLS Online TPP Program

#Question id: 6957

#Unit 5. Developmental Biology

The effect of grafting an extra piece of notochord into a dorsal position adjacent to pre-somitic mesoderm is

TLS Online TPP Program

#Question id: 6958

#Unit 5. Developmental Biology

Vg-1 and wnt are used in both frogs and chicks to establish a body axis, although in chicks this is the antero-posterior axis instead of the dorso-ventral axis. What is the region of the chick embryo that is thus analogous to the Nieuwkoop center?

TLS Online TPP Program

#Question id: 6959

#Unit 5. Developmental Biology

Which of the following is NOT involved in left-right asymmetry of vertebrates?

TLS Online TPP Program

#Question id: 6960

#Unit 5. Developmental Biology

At the blastocyst stage during mammalian embryonic development, the specification of trophectoderm requires ________; whereas in inner cell mass _________activation is essential.

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#Question id: 6961

#Unit 5. Developmental Biology

Do HOX genes play a role in the development of C. elegans?

TLS Online TPP Program

#Question id: 6962

#Unit 5. Developmental Biology

In which way is the organizer region of the sea urchin similar to that in frogs?