In prokaryotes, the circular chromosome is contained in the cytoplasm in an area called the nucleoid. In contrast, in eukaryotes, all of the cell's chromosomes are stored inside a structure called ...

This illustration shows the structure of a chromosome, highlighting how DNA is tightly packed around disc-shaped proteins to form the characteristic X-shaped figure seen during cell division. (Image: ...

The centrioles are now at opposite ends of the cell. The spindle ... (Again, only four chromosomes are shown here in order to simplify the illustration.) ...

Although the DNA code from cell to cell is the same ... coiling of chromatin (the thick line in this illustration). This coiling causes the chromosome to resemble a spring. Chromatin refers ...

Thus, in her experiments, McClintock observed several fundamental properties of chromosome biology; specifically, she noticed that cells do not tolerate the presence of unprotected chromosome ends ...

These chromosomes are present in every cell of the body — not just in the reproductive organs. As a result, every cell carries an intrinsic sexual identity, a concept I refer to as cellular sex ...