What is a chromatid?
Correct answer: A. A chromosome in G1 of the cell cycle
- A. A chromosome in G1 of the cell cycle
- B. A replicate chromosome
- C. A chromosome found outside the nucleus
- D. A special region that holds two centromeres together
Explanation
In G1, each chromosome is a single chromatid. In G2, after DNA replication in S phase, as cell enter mitotic prophase, each chromosome consists of a pair of identical sister chromatids, where each chromatid contains a linear DNA molecule that is identical to the joined sister chromatid.
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About Cell Structure and Function
Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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