How does the body know when it’s time to start puberty, or when to stop a growth spurt, for example? A lot of these things are pretty hereditary, so presumably it’s mostly genetic rather than environmental, but how does the body measure time? How does it know “this is tall enough”?
In: 74
Time is measured by telomeres in cells. But its more how many times have the cell divided into new cells.
>A telomere is a region of repetitive DNA sequences at the end of a chromosome. Telomeres protect the ends of chromosomes from becoming frayed or tangled. Each time a cell divides, the telomeres become slightly shorter. Eventually, they become so short that the cell can no longer divide successfully, and the cell dies.
Latest Answers