Which of the following statements about complete cleavage versus incomplete cleavage is true?
A) Incomplete cleavage occurs in species with small volumes of cytoplasm.
B) Complete cleavage is found in mammals and is the more evolved characteristic.
C) Incomplete cleavage occurs in species with large amounts of yolk.
D) Complete cleavage occurs only in eggs that have been fertilized by two sperm.
E) Incomplete cleavage occurs in species with small amounts of yolk.

Question

Quizplus · Accepted Answer

Incomplete cleavage occurs in species with large amounts of yolk because the yolk is not evenly distributed throughout the egg, making it difficult for the cells to divide completely. In species with small amounts of yolk, complete cleavage can occur more easily because the cells can divide evenly.

Which of the Following Statements About Complete Cleavage Versus Incomplete