Much Ado About Lesbian Teen Sex?

[Farm Boy]

Thank you El Mac and Samson. That was unexpectedly fun.

 

[El_Machinae]

Ok, so what I really am trying to sort out then is how the pairings work in general, rather than simply between the sex chromosome pairings. I'm assuming, perhaps incorrectly, that the 22 non X/Y pairs are responsible for some of the varying genetics between individuals of a species(I don't know what specific traits would be coded on those as opposed to X/Y), is that the case? Or are those 22 pairs reasonably static? So with those 22 pairs, is one "turned off" as well? Or is that where the mixing of expressed parental genetics occurs in sexual reproduction? The X/Y interaction just being unique there, in that females have a duplicate of something they only need one of, so the organism can pick whichever one it wants providing for a degree of redundancy?

Samson did a more than reasonable job (thanks Samson!).

So, to go back, there are a LOT of genes on the other 22 chromosome pairs. Each chromosome is a 'mixed' chromosome from one of your parent's chromosome pair. For example, papa had two 'chromosome 1's. He then mix-n-matched between the two of them, and then gave you a 'chromosome 1' that was an even (though random) mixing of his two. A different sperm got the 'other half'.

For example. (Chromosomes are words; they're all 'chromosome 1'). Your dad had ...

bake
bait

He then mixed them up and divided them up.

baba
kite

He then gave you one of them. A now-dead sperm got 'kite'.

baba

Your mom gave you an equivalent from her. So, you have two chromosomes '1's yourself

baba
mama

Neither of these chromosomes are silenced (except for small, specific regions that are unimportant to our story and can be ignored). If 'baba' contains a non-functional gene, 'mama' could easily have a functional version.

 

[Farm Boy]

Ok, thought was done, but to make sure I'm not still totally off: X and Y chromosomes are the biggest errata to the rules of your post above? If Dad only has one Y chromosome, because the other is X, I presume half of the sperm get his Y chromosome in its entirety and the other half get his X chromosome in its entirety? Then, since Mom has two Xs, do hers behave similarly, or does the X chromosome from Mom actually indeed get divided and shuffled, so that is the why of the X being a bit more static than most, but not as static as the Y? Or am I totally still off base, where parts of X and Y can indeed be mixed in meiosis(?), with only specific parts of the whole thing dictating which it is - X or Y?

 

[Borachio]

Of course it is.

As are murder, genocide, rape, infanticide and incest.

The difficulty arises when people conflate "natural" and "good".

The word "natural" is a dreadful one in English.

 

[El_Machinae]

Ok, thought was done, but to make sure I'm not still totally off: X and Y chromosomes are the biggest errata to the rules of your post above? If Dad only has one Y chromosome, because the other is X, I presume half of the sperm get his Y chromosome in its entirety and the other half get his X chromosome in its entirety? Then, since Mom has two Xs, do hers behave similarly, or does the X chromosome from Mom actually indeed get divided and shuffled, so that is the why of the X being a bit more static than most, but not as static as the Y? Or am I totally still off base, where parts of X and Y can indeed be mixed in meiosis(?), with only specific parts of the whole thing dictating which it is - X or Y?

You're really close. In fact, I cannot quite tell if you've got it, you're not making any mistakes in your summary. Yeah, the X and Y are aberrant, and they don't mix during meiosis. Dad will give you either his full Y or his full X. Mom shuffles them up, and then gives you a specific version of that shuffling (another egg got the pair of 'mama', above).

Whew, so see if this makes sense. Dad gives the daughter one of grandma's X's, which was a shuffling of her two X's in the first place. Mom gives the daughter a shuffled version of her two X's. So, daughter has two X's.

 

[Farm Boy]

Ok, so 22 pairs shuffle at full rate through generations and mutate as they will. X shuffles at half rate and mutates as it will, and Y only changes when it mutates? Harmful traits in 22 pairs and Xs in females only are functionally harmful when they either double up or override a functional trait, males express every harmful trait on either the X or the Y. They also happen to always express any super useful trait on either X or Y.

 

[MagisterCultuum]

(another egg got the pair of 'mama', above).

Actually, Ovogenesis results in a single egg and three much smaller cells called polar bodies. The polar bodies just die off, as all the resources they would need to survive are taken by the egg. There is no egg that gets those specific genes not found in another egg.


Genetic recombination technically does happen with the X and Y chromosomes (Allosomes) too, not just the Autosomes. However, this is limited to the pseudoautosomal regions, which contain barely 5% of the genes on the Y chromosome and much less on the X chromosome.

Genetic recombination can also technically happen even between completely unrelated chromosomes. These Chromosomal Translocations are the cause of many kinds of cancer and several other harmful syndromes. They can also be harmless, in those who still inherited all of the right genes just in unusual places. That does however make it much more likely that the next generation will experience harmful translocations. Translocations that do not effect an individual's health may still cause infertility.


The Y chromosome mutates at a faster rate than other chromosomes, possibly because it is the only chromosome that must always pass outside of the body every generation. The genes in eggs are much better protected from various mutagens, including radiation.


It may also be worth noting that sometimes a genetic mutation can be beneficial to one sex and harmful to the other, and that it is more common for that to mean that it helps women more than men.

The X chromosome contains genes related to color vision. I a man may be red-green color blind or blue-yellow color blind due to a single mutation. A woman who has a normal color vision gene on one chromosome and one of either type of color blindness genes on the other will see color as normal. She has to have the same type of color blindness mutation on both chromosomes in order to be color blind. A woman who has the gene for red-green colorblindness on one chromosome and blue-yellow colorblindness on the other chromosome is not colorblind either. In fact, her color vision is superior to that of those who do not carry either color blindness gene. She produces an extra type of light sensitive pigment in the photoreceptors of her eyes, and can see 4 primary colors instead of 3.

 

[Ziggy Stardust]

Knowing tbe guy, he'll probably deny that.

Bless him

 

[Farm Boy]

Knowing tbe guy, he'll probably deny that.

Bless him

For some reason I read that in the southern US context of ''bless him,'' which does make it a lot funnier.

 

[Borachio]

Now, that's more like it!

"You are an idiot but I like you and care about you so I dont want to hurt your feelings."

In the UK it's "Aw! Bless."

It's possibly the most hurtful thing people ever say to me.

Spoiler :

*sob*

Spoiler :

And it happens a lot.

 

[bhsup]

In the UK it's "Aw! Bless."

What?! Kan says that to me in #fiftychat like all the time... I feel like that far side cartoon when The Lone Ranger finds out what kemosabe means!

 

[Borachio]

I'm sorry Mr Gent. I wish I could say that's not what he means at all.

Though I'm sure he means it kindly.

And perhaps in Scotland, where they do nearly everything differently (usually involving hammers, and strange food), it does mean something else.

 

[Ziggy Stardust]

One of my best friend's best friend is an idiot.


Link to video.

 

[Borachio]

Behold the happy idiot, he doesn't give a damn. I wish I were an idiot -- my god, perhaps I am.

Spike Milligan