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#Question id: 5011


A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from lungs of an ancestral fish is an example of

#Unit 11. Evolution and Behavior
  1. an evolutionary trend.

  2. paedomorphosis.

  3. exaptation.

  4. adaptive radiation.


Answer:- Option(s): 3


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TLS Online TPP Program

#Question id: 31297

#Unit 5. Developmental Biology

BMP inhibitors secreted by the organizer at the dorsal side of the embryo, these organizer proteins are named as:

TLS Online TPP Program

#Question id: 31298

#Unit 5. Developmental Biology

Drosophila Sog protein is a homologue of which protein in amphibians ?

TLS Online TPP Program

#Question id: 31299

#Unit 5. Developmental Biology

In chick embryo, the space between the blastoderm and the yolk is called as:

TLS Online TPP Program

#Question id: 31300

#Unit 5. Developmental Biology

During chick development, as cells converge to form the primitive streak, a depression called as:

TLS Online TPP Program

#Question id: 31301

#Unit 5. Developmental Biology

Which of the following acts as the equivalent of the amphibian Nieuwkoop center in chick?

TLS Online TPP Program

#Question id: 31302

#Unit 5. Developmental Biology

The mechanism of Mediolateral intercalation in the formation of the primitive streak is mediated by the activation of the:

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