In drosophila, Physical forces drive invagination of the ventral furrow. Following statements regarding to this process:

A. The cellularized blastoderm will begin to activate higher levels of myosin in the cells at the ventral midline and preferentially at their apical surface.

B. Epithelial adhesions paired with differential activation of dynein and tissue geometry create mechanical constraints that affect the orientation of actomyosin meshworks.

C. The A/P oriented arrays of myosin in the cells at the ventral midline generate tension along the anterior-posterior axis.

D. The combination of tissue geometry and tension of these anterior-to-posterior meshworks cause the tissue to fold outward at a right angle to the anterior-posterior axis, creating a long and narrow ventral furrow.

Which of the following statements are incorrect?

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#Question id: 5556

#Unit 5. Developmental Biology

Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.

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#Question id: 29026

#Unit 11. Evolution and Behavior

Caused of behaviour are of two types proximate cause and ultimate cause. Given statements about these causes, which of the following is not true?

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#Question id: 26371

#Unit 3. Fundamental Processes

Bacterial replicator site comprises of

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#Question id: 32436

#Unit 2. Cellular Organization

In microtubules, the end with exposed β-subunits is the ___?___, while the end with exposed α-subunits is the __?____.

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#Question id: 29480

#Unit 6. System Physiology – Plant

Which of the following hormone Enhance Cell Wall Extensibility without Acidification