Chapter 19 - Genes, Development, and Evolution - 19.4 - Changes in Gene Expression Underlie the Evolution of Development - 19.4 Recap - Learning Outcomes - Page 419: 1

Apoptosis is important to the normal development of an organism since it helps shape the body of the fetus. For example, the hands and feet of an early human embryo look like tiny paddles. Within 2 months of development, however, the connective cells between the digits die, forming fingers and toes.

Apoptosis is important to the normal development of an organism since it helps shape the body of the fetus. For example, the hands and feet of an early human embryo look like tiny paddles. Within 2 months of development, however, the connective cells between the digits die, forming fingers and toes.