00:01
Epigenetics is a certain type of study of heritability that doesn't deal with changes in the base dna sequence, but it deals with changes of the structure around it.
00:15
The word epigenetics means like the word prefix epi means above or kind of surrounding.
00:23
So these are changes that surround our genes.
00:27
We're going to talk about a couple of different important characteristics of them.
00:31
The first is that, like all genetics, epigenetic changes are heritable.
00:39
So at least to some degree, the changes in chromatin structure, like, for example, the amount of that a gene is methylated has to be at least some percentage heritable to be passed on from parent to offspring, because that is all about genetics.
01:00
In the second, like i said earlier, it does not affect the base dna sequence.
01:09
So there's not any mutations in the nucleotide bases, but the changes are all about what's going on around them...