Evolution is a process that results in changes in the genetic material of a population over time Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species.
According to video 'evolution is results in the change in the frequencies in a population of certain gene variants over time'
(this would be very difficult to detect with any degree of statistical certainty, even if multinomial or
related sampling assumptions are appropriate)
A gene variant is a permanent change in the DNA sequence that makes up a gene. This type of genetic change used to be known as a gene mutation, .
what kinds of gene variants are possible?
FOUR WAYS HUMANS ARE STILL EVOLVING (VIDEO)
HARSH CONDITIONS HEAT (ABORIGINAL AUSTRALIANS)
Thryroxine levels different
ANDES: Exposure to naturally occurring arsenic
Population study AS3MT more likely
Pop seemed to evolve better arsenic tolerance (last 11000 years?)
Genome study 2016 HEREDITARY
Heights last 2 or 3000 years
Alzheimer Study n=57000. 2017 Frequency of allele dramatically reduced in over 70s
Statistical tests used
Grandmother hypothesis,
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