Limb bud is regionalized into which of the following functional domains?

a) progress zone

b) Marginal zone

c) zone of polarizing activity

d) apical ectodermal ridge

TLS Online TPP Program

#Question id: 5607

#Unit 5. Developmental Biology

Developmental changes that occur when different parts of an organism grow at different rates, phenomenon known as-

TLS Online TPP Program

#Question id: 5608

#Unit 5. Developmental Biology

Stereoblastulae -

TLS Online TPP Program

#Question id: 5609

#Unit 5. Developmental Biology

Just before sperm addition, sea urchin eggs are microinjected with a calcium chelator. What event will most likely not takes place after fertilization?

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#Question id: 5610

#Unit 5. Developmental Biology

The acrosome reaction involves the extension of the acrosomal Process:

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#Question id: 5611

#Unit 5. Developmental Biology

Which ion play an essential role in pollen tube growth?

TLS Online TPP Program

#Question id: 5612

#Unit 5. Developmental Biology

Outside the egg cell membrane is an extracellular matrix that forms a fibrous mat around the egg and is often involved in sperm-egg recognition. In invertebrates, this structure is usually called the: