Biology for IGCSE & O level - Inheritance (Section 9 - No. 26)

What is the difference between a chromosome and a chromatid?
A chromosome is a single DNA molecule, while a chromatid is a duplicated chromosome.
A chromatid is a single DNA molecule, while a chromosome is a duplicated chromosome.
They are the same thing.
Chromosomes are found only in prokaryotes, and chromatids are found only in eukaryotes.

Explanation

A chromosome is a single molecule of DNA, while a chromatid is a duplicated chromosome.

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