Definition

The single nucleus found in a male or female gamete, such as an egg or sperm, before it merges with another gamete during fertilization.

Example

The pronucleus is essential for the process of fertilization, as it contains the genetic material from the gamete.

Conversation

Have you ever heard of the term pronucleus?

Yeah, I think it's related to fertilization, right?

Exactly! It's the nucleus of a gamete before it fuses during fertilization.

That’s interesting; I didn’t know it was called that!

Synonyms & Antonyms

Root Explanation

Pronucleus → It is formed from "pro-" (meaning before) and "nucleus" (from Latin, meaning kernel or core). The word "pronucleus" refers to the nucleus that is present before the fusion of gametes in fertilization, thus indicating its position before the main nucleus forms.

Memory Tip

Think of 'pro-' meaning 'before' and 'nucleus' meaning 'core' — this helps you remember that a pronucleus is the core that exists before the main nucleus forms.

Visually Confused Words