Before the preovulatory surge in luteinizing hormone, granulosa cells of the follicle secrete which of the following?

TLS Online TPP Program

#Question id: 28321

#Unit 5. Developmental Biology

An experiment in mouse eggs bearing mutant ZP2 that cannot be cleaved by ovastacin, what will happened after the ZP2 mutation?

TLS Online TPP Program

#Question id: 28322

#Unit 5. Developmental Biology

In mammalian cell, second slow block to polyspermy comes from___

TLS Online TPP Program

#Question id: 28323

#Unit 5. Developmental Biology

 A cleavage furrow cleaved only a portion of the cytoplasm and does not penetrate the yolky portion, this type of cleavage is referred to as___ 

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#Question id: 28324

#Unit 5. Developmental Biology

Echinoderms exhibit which type of cleavage?

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#Question id: 28325

#Unit 5. Developmental Biology

The pattern of embryonic cleavage peculiar to a species is determined by two major parameters: 

(1) the amount and distribution of yolk protein within the cytoplasm, which determine where cleavage can occur and the relative sizes of the blastomeres

(2) factors in the egg cytoplasm that influence the angle of the mitotic spindle and the timing of its formation

Which of the following statements is incorrect about patterning of embryonic cleavage?

TLS Online TPP Program

#Question id: 28326

#Unit 5. Developmental Biology

Infolding of a sheet of epithelium cells which are mainly seen in the sea urchin endoderm ?