Under Normal Circumstances, a Zygote Has ____ Pairs of Chromosomes

question 29

Multiple Choice

Under normal circumstances, a zygote has ____ pairs of chromosomes.

• A) 12
• B) 23
• C) 46
• D) 68

---

Definitions:

Nerve Impulse

An electrical signal that travels along the nerve fibers, facilitating communication between neurons or between neurons and muscles.

Midbrain

In mammals, the part of the brain located below the thalamus and above the pons.

Pons

A part of the brainstem that links the medulla oblongata and the thalamus, playing a key role in controlling breathing, communication between different parts of the brain, and sensations such as hearing and taste.

Cerebellum

Part of the brain at the back of the skull that regulates coordination, precision, and accurate timing of movements.