New answers tagged

2 votes

When do retinal cells stop differentiating?

why do eye conditions like retinoblastoma develop primarily in infants? One explanation is that infants grow fast. In general, each cell division is a risk of breaking/losing chromosomes. Breaks need ...
  • 961
6 votes

Why does a non-functional retinoblastoma protein cause tumours in the cells of the retina specifically?

From Wikipedia: The retinoblastoma protein ... is a tumor suppressor protein that is dysfunctional in several major cancers So, although it's commonly associated with retinoblastoma, it's not ...
  • 37.1k
5 votes

Why does there have to be two muscles to control the size of the pupil?

Short answer Agonist / antagonist muscle pairing in the form of the sphincter and dilator muscles in the iris allow for quick and powerful movements of both the constriction and the dilatory response. ...
  • 51.5k

Top 50 recent answers are included