Cells in a developing embryo are subject to a number of regulatory pressures. Which of the following is NOT a source of regulatory signals in animal development?
A) nearby cells
B) sperm nucleus
C) extracellular matrix
D) oocyte cytoplasm

Question

Quizplus · Accepted Answer

The sperm nucleus does not provide regulatory signals in animal development. It only contributes genetic information to the zygote. Nearby cells, the extracellular matrix, and the oocyte cytoplasm all provide important regulatory signals in animal development.

Cells in a Developing Embryo Are Subject to a Number