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biology 4.2 genetics

cell cycle, mitosis, meiosis

Why do we need new cells? 1. Replacement of lost or damaged cells 2. New cells gradually move outwards, replacing dead cells 3. Growth increasing in size from baby to adult
Genetics materials exists as a mass of (Chromatin)? Very long fibers(DNA and protein molecules)
As a cell prepares to divide, the chromatin condenses, becoming (chromosomes)? Visible as compact structures.
Before cell divisions begins, all the chromosomes in a cell are duplicated forming (sister chromatids)? Sister chromatids
They are tightly joined at the (Centromere)? Centrome
Created by: rose504