Embryology is defined as the branch of biology and medicine that studies embryos and how they develop. The study of how human embryos develop from fertilization to birth is an example of embryology

Genetics: Because of the increasingly important
roll of genetics and molecular biology in embryology and the study of birth defects, basic genetic and
molecular principles are discussed. The first chapter
provides an introduction to molecular pathways and
defines key terms in genetics and molecular biology.
Then, throughout the text, major signaling pathways and genes that regulate embryological development are identified and discussed.