Whether a Segment of DNA Is Relaxed or Condensed-And Therefore

question 21

Multiple Choice

Whether a segment of DNA is relaxed or condensed-and therefore able or unable to be activated-is influenced by epigenetic ______.

• A) histones
• B) inheritances
• C) alleles
• D) marks or tags

---

Definitions:

Secondary Sex Characteristics

Physical traits that are not directly involved in reproduction but distinguish the sexes, such as breast development in females and beard growth in males.

Primary Sex Characteristics

The main organs and structures directly involved in reproduction.

Menarche

A primary sex characteristic in females; a female’s first menstrual period, which signals the ability to reproduce sexually.

Genetic Influences

The impact that the genetic makeup of an individual has on their traits, behavior, and susceptibility to certain conditions.