Eukaryotic cells form chromosomes before cell division

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Presentation transcript:

Eukaryotic cells form chromosomes before cell division Gene- segment of DNA that codes for a protein or RNA molecule. Chromosome- DNA tightly coils up around proteins when preparing for cell division. Chromatids- exact copies of DNA that make up each chromosome Centromere- the two chromatids of a chromosome are attached here. 1 strand of DNA can be up to 5 feet long!

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Chromosome Structure 1 – Chromatid 2 – Centromere 3 – Short arm 4 – Long arm

Chromosome

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Prophase

Late Prophase Chromosomes Nucleus & Nucleolus have disintegrated

Metaphase

Anaphase Sister Chromatids being separated

Anaphase

Telophase

Comparison of Anaphase & Telophase