00:03
So the definition of evolution is basically genetic changes over time within populations, not individuals.
00:14
So why is it populations? because the evolution itself starts from individual changes in the population.
00:22
Maybe a mutation occurred in an individual.
00:26
But over time, when those genes are passed from that individual to its offspring and later on to the rest of the population, if that mutation becomes mainstream, then that will change the characteristic of the overall population.
00:43
The population will diverge into a direction following speciation and therefore evolution.
00:52
So i could give an example.
00:55
We could see that the english in u .s.
00:59
And uk, they're both english -speaking countries, but the english language itself has been evolving differently in both of these populations.
01:12
They're both diverse communities with people with different dialects, languages.
01:20
But over time, these individuals contribute to the language in the u .s.
01:28
And this overall change in the population, this overall acquiring of the american accent and contributing to the, community causes these english dialects to evolve in different directions.
01:45
And the same occurs in the uk...