Families that carry a mutation of the BRCA1 gene have their own unique mutation of it.
Biologists speculate that a mutation that prolonged the gene's activity was suddenly favored and spread throughout the population.
Penke, Denissen and Miller argue that a mutation-selection standoff is the explanation for why we differ in intelligence.
She ran tests on families affected by the disorder and found that a mutation in a gene called SCA1 was the sole cause of the disease.
The effect that a mutation has depends on the cell in which the mutation occurs.
In a recent lecture, the Oxford neurobiologist argued that a mutation in the brain of a single human being 200,000 years ago turned intellectually able apemen into a super-intelligent species that would conquer the world.
Others have speculated that a mutation tamed the SARS virus.
It is known that a mutation in a PPR gene usually has a strong phenotypic effect (Kocábek et al. 2005).
Second, the roulette wheels create a very high chance that a mutation occurs in each generation (5/8 = 62.5%), which is higher than mutation rates occurring in nature.
e., are more canalized) than populations carrying a large mutation, implying that a mutation changes (decanalizes) the effect of other mutations, i.e., exposes otherwise small or cryptic genetic variation (Waddington 1942).
