For more than a century, heredity has been framed through the tidy logic of Mendel’s pea plants: traits pass from parent to ...

The 20 th century was dubbed ‘the century of the gene’. You could say it started with the coining of the word ‘gene’ in 1903. Fifty years later, James Watson and Francis Crick used Rosalind Franklin’s ...

Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation. Humans, dogs and goldfish are examples of species. Different ...

Some causes of blindness are genetic. However, blindness has many causes, such as eye injuries, eye surgery complications, or health conditions, such as diabetes or stroke. According to the Centers ...