How is it that people look so much like their great great grandfather, despite have generations of other bloodlines mixed in?
In: Biology
You are more genetically closer to your great great grandfather than the seed of Genghis Kahn in your DNA.
That explains why you look like more like him than an Asian warloard!
The further you go back in time, you look less like a human, go back far enough you look like a worm.
Evolution is interesting.
There is a thing called recessive inheriting. in genetics a feature that you can have (like hair or eye colour) is called allele and some of them are dominant and some of them are recessive. Dominant here means that it is way more likely to be inherited to a child and recessive genes are still in your body and DNA but will not see the light of day.
For instance: you know how some people can roll their tongue and some people can’t. The gene for being able to roll your tongue is exclusively dominant. Say your mom can roll her tongue but your dad can’t. You will still be able to roll your tongue cause that is the dominant gene and it outweighs the gene for not being able to roll your tongue.
With hair and eye color it is (sadly) way more complicated and even scientists haven’t figured out the whole thing yet.
As an example: my grandfather was missing a piece of his earlobe since forever, he was born with it. Now my grandparents have 4 sons and all of them have full earlobes like my grandma. They all carry the gene somehow but the gene for complete earlobes is dominating so it never made it into daylight. Now one of their sons (my uncle) has a son (my cousin) with a part of his earlobe missing. So somehow in my aunts family (even tho she has full earlobes) there was probably a gene like that passed down recessively and now the genes were put together in one of their kids and are visible again. There are also genes that always or usually skip a generation and then are visible in the grandkids again.
Hope I could help at all
I hope this gets explained, my sister looks adopted within the immediate family (majority dark hair dsrk eyes vs blonde hair blue eyes)
However shes the spitting image of our grandmother
I think its something to do with dna and genetics skipping generations…. hope an adultier adult can explain
Because you don’t just inherit an average mixture of your parents’ DNA. Which bits and pieces you get is actually pretty random.
So it’s entirely possible for you to get quite a bit of Mom while your brother gets a lot more Dad.
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