The two major factors that determine development during the prenatal period according to the text are
A) the impact of androgens and teratogens.
B) genetic contribution from ovum and sperm, and epigenetic modification.
C) maternal nourishment and maternal diseases.
D) X chromosome inactivation and Y chromosome stimulation.
E) genetic contribution from ovum and sperm, and the presence of androgens.

Question

Quizplus · Accepted Answer

The two major factors that determine development during the prenatal period are the genetic contributions from the ovum and sperm, which set the foundational blueprint for development, and epigenetic modifications, which are changes in gene expression that do not involve alterations to the DNA sequence itself but are influenced by environmental factors and behaviors. These modifications can affect how genes are turned on or off and are a key factor in how the genetic blueprint is expressed during prenatal development and beyond.

The Two Major Factors That Determine Development During the Prenatal