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7 votes

How is hereditary cancer risk estimated?

There are really two distinct questions here, but they are common. Is cancer heritable? Is cancer (or cancer risk) contagious? tl;dr Most cancer cases are not heritable. Some are. Heritable cases ...
De Novo's user avatar
  • 3,178
3 votes

How did hereditary diseases originally start?

You are almost spot on! Children usually do not have exactly the same DNA as their parents, because it is evolutionarily wise to allow some new traits to emerge. So, there can be spontaneous mutations ...
Narusan's user avatar
  • 6,921
3 votes

Are dimples and cleft-chins (aka dimple chins, butt chins) genetic?

DIMPLES Professor McDonald, citing limited research, concludes dimples have been mislabeled as genetically inherited and as a dominant trait. However, the University of Utah considers dimples an "...
Prince's user avatar
  • 1,868

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