Definition

Relating to a theory in biology that suggests species evolve in a straight line or in a predetermined direction, rather than through random variation.

Example

The concept of orthogenetic evolution challenges the idea of random mutations in species development.

Conversation

Have you ever heard of the term orthogenetic?

Yeah, I think it relates to evolutionary changes, right?

Exactly! It's about how species can evolve in a straight line without much branching.

That's really interesting! I love learning about how life adapts.

Synonyms & Antonyms

Root Explanation

Orthogenetic → It is formed from "ortho-" (from Greek "orthos", meaning straight or correct) and "genetic" (from Greek "genesis", meaning origin or birth). The word describes a process of development that is directed or follows a straight path, particularly in biological contexts.

Memory Tip

Think of 'straight' ('ortho-') leading to 'origin' or 'birth' ('genetic') — this helps you remember that 'orthogenetic' refers to a straight or directed process of development.

Visually Confused Words