/sci/ - Science & Math

>>9912913
Small difference in Genes make Big Difference in output, much like small difference in code for think machine

>>9912915
Explain, you fuck!

>>9912919
Concept is: DNA make proteins, proteins make thing happen in cells. That is the simple version.

So, small change in genes make for difference of produced proteins in cell, which can then behave radically different with a small change. Also everyone is at least you 36th cousn

>>9912926
What I’m asking is, if the dna is the same, are you LITERALLY your parents mashed together?

Or is it more like

>Get gene
>Gene expresses certain way and your cells form on their own
>Same gene expressions, different cells

My initial question is if your girlfriend has 50% of dna from both parents, is fucking her equivalent to fucking her parents?

>>9912933
AH okay, simply no, because those genes might have the same "coding" in them, but the execution of it happens in an entirely different body with entirely different experiences. That is the the fast way I can think of address your question, anon.

>>9912938
Interesting. It was just a weird shower thought I had and was dying to know/learn after seeing pics of Johnny Depps daughter and her incredible resemblance to him.

It was basically a thought of how much of the parent is actually physically in each person. I didnt consider gene expression (hence brainlet in this subject)

>>9912941
>a girl looking like depp

RIP IN FUCKING PISS

Bumpin bitches!

>>9913012
>bumping on a slow board in Euro hours

>>9912933
Yes, fucking a girl is basically the same as fucking one half from both of their parents or a quarter of each grandma and each grandpa, if you will. I get off to the latter.

>>9913017
Is that not slightly unsettling to anyone else?

>>9913023
It is :)

It means you fucking your sister is like your parents fucking.

How is it that humans and chimpanzees share 99% of their genes, but I share only 50% with my brother?

>>9913138
Simple explanation:
A lot of genetic information is garbled nonsense.
Sections of DNA have a marker indicating for certain features and proteins to be made, called alleles.
They can be expressed (doing something like eye color) or not expressed (just sitting there). Similar to how if a blue eye and brown eye person gets a kid their kid will have blue and brown alleles but will only have brown eyes (the expressed gene)
When people say that chimps and humans share 99% of their DNA, they really mean that 99% of the expressed DNA in chimps exists in the collective human genomes. This doesn’t really mean anything except that humans are similar to chimps (like how cars and trucks are similar).

Example:
Bananas and humans share 50% of their DNA. All it means is that bananas have cells that need to divide to maintain growth, process sugar, and house their DNA in a nucleas. Just normal stuff that most eukaryotes have to do, but because their is an allele/gene that controls it we “share DNA”. Again, it doesn’t mean much.
You could say something like a fan “shares DNA” to an airplane because they both turn energy into movement.
Also I am not so good at biology so someone correct me if I made a mistake.

>>9913138
The thing is, the chemicals that make DNA (adenine, guinine, thymine and cytosine) are ordered in a "sequence". The way these go one after another is what is similar between humans and chimpanzees, but pretty sure it's less than 99%.

You share roughly 50% of DNA, because you both descend from the same parents, but in reality, if you compared your sequence with your brother's it would be much more than 50%, and higher than the similarity with the chimp, since you are both human.

>>9913188

>Similar to how if a blue eye and brown eye person gets a kid their kid will have blue and brown alleles but will only have brown eyes (the expressed gene)
I don't see how protein expression has anything to do with >>9913138's question. Also, you are mixing expression with phenotype. Sure, the expression of proteins gives place to the phenotype, but the phenotype can vary depending on which alleles are expressed in which manner, on what time, and in which orders of magnitude. There's much more to it than one allele being completely off and the other one on, but again, this has absolutely nothing to do with the question.

>When people say that chimps and humans share 99% of their DNA, they really mean that 99% of the expressed DNA in chimps exists in the collective human genomes.
Wrong. If someone says that chimps and humans share 99% of their DNA, it means exactly what it says - that we share 99% of the sequence. It has nothing to do with expression.

>>9913023
You are not your genes, they are just seed code.

Which is among the reasons why her mom has a whole lot more stretch marks.

Mind, it's not *quite* 50%, since there's mutations, hyperphenotyping, and epigenetic shit to consider, and different combinations of genes express differently, sometimes with synergetic effects, in the case of matching flaws. ...and then there's all the non-genetic variances, having to do with diet, variations in hormones, development, etc.

>>9913217
>hyperphenotyping
did you just make this word up?

What's generally overlooked by people without a background knowledge in genetics is how and why the genes are expressed.

Genes don't actually vary that much from individuals because they code for basic proteins which humans need to live so people don't necessarily have these drastically different proteins. It's about how they're expressed OP

>>9913208
You clearly lack reading comprehension.
The reason why I included all the irrelevant crap was to explain what genes are. When people say that chimps share 99% of their DNA, the specific study they were referring to ONLY matched chimp alleles to human DNA, and found that 99% of the alleles has the same exact function in humans.
They didn’t look at the entire sequencing (the non expressed) genes. They also didn’t take into account what percentage of the human genome these alleles took up, nor how impactful they are on physiology or biochemistry.

I’m sorry if I didn’t express myself correctly, but I assumed that this person had no idea what genetics are and that’s why he was asking the question. So I have him the required knowledge, but did not mean to imply that expression in any particular individual was accounted into the study.

>>9913273
>>9913278
This was the point I was trying to make in the end. That it really doesn’t matter because of exons and expression.

>>9912913
A schematic. Keep in mind that they are not the "exact" same genes. Some genes may stay intact but others may undergo recombination.

>>9913278
>You clearly lack reading comprehension.
I am clearly also fucking blind, because nowhere in this thread I see anyone stating anything about any study. What are you on about?

>>9912913
Having sex with a girl is basically having sex with dead stars that fused all these heavy atoms.
That's where cumming with the power of 1000 suns come from.

>>9913381
This unsettles me a bit

>>9912933
No, there are environmental factors which affect how genes express themselves. Look up epigenetics.

>>9912913
the worst part is when the girl kind of looks like her dad