The evolution of multicellularity in animals has primarily occurred by
A)changing how existing genes are used.
B)deleting many old genes.
C)producing many new genes.
D)deleting many old chromosomes.

Question

Quizplus · Accepted Answer

The evolution of multicellularity in animals has mainly occurred by changing how existing genes are used, such as controlling when and how genes are turned on or off. This allows for greater cooperation between cells, leading to the development of specialized tissues and organs, eventually leading to multicellular organisms.

The Evolution of Multicellularity in Animals Has Primarily Occurred by