The embryos of complex multicellular animals must establish spatial coordinates in order for development to proceed. an important reference coordinate for developing frogs is the (a) location of the vegetal pole. (b) location of the animal pole. (c) point of sperm penetration. (d) location where gastrulation begins. (e) direction of the sun.

The embryos of complex multicellular animals must establish spatial coordinates in order for development to proceed. On that note an important reference coordinate for developing frogs is the point of sperm penetration into the egg.

Option C

Explanation:

Sperm is an amphibian that reproduces sexually, the point of penetration of the frog sperm into the egg causes the centrosomes of the sperm to act at right angles to the direction of the sperm path, this pushes the sperm towards the egg whereas if this push doesn’t happen then the sperm moves away from the egg.

[content deleted] - user123802726recklesschicken

did you fail the test? xd