Chromosome Evolution

Fissions and fusion is the most common way for the number of chromosomes to change.

Humans have 23 pairs of chromosomes, but all of the other great apes have 24 pairs. At some point since our lineage split from that of chimpanzees, two chromosomes fused

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the atomic radii of chemical elements are a complicated task as the size of an atom is of the order of 1.2×10^-10m.

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The diameter of the nucleus is in the range of 1.75 fm (1.75 × 10⁻¹⁵m) for hydrogen.

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Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way.

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The electrons revolve in orbits around the nucleus.

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Proton & neutron are found in the center of the atom, a place called the nucleus.

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An atom has three parts: Proton carries positive charge, Electron carries negative charge, While Neutron carries no charge.