Ok, some anon posted this and I know I'm a little tried but I'm missing something. Any help countering this argument?
Any help? I still got nothing...
>>9098456
>day is 24 hours.
wrong.
No shit, a day is 24hours long...if you dont know just say "I don't know but I'm interested in the explaination myself"
Pretend like I'm an idiot (I am). I was thinking the other day, Males have XY chromosomes, which means, obviously, I got my Y chromosome from my dad, which has to be a close replication of my grandfathers, which has to be a close replication of my great grandfathers etc. When a male produces sperm, is the Y sperm an exact replication of his Y Side of the DNA? Or is it somehow modified? Or am I retarded? I assumed you get one side of your DNA from your mother, and one side from your father.
And if that ISN'T the case, how does your body pick millions of pieces from your DNA from your mother and father and place them in the correct order in your sperm or egg cells? It can just pick the pieces and assemble brand new DNA?
>>9098426
>When a male produces sperm, is the Y sperm an exact replication of his Y Side of the DNA?
Not exact. All chromosomes during the production of sperm undergo recombination, which produces a lot of the variation in the offspring relative to the parent. Recombination is why you have different traits from your parents essentially. But the Y chromosome doesn't undergo recombination, it only changes through accumulated mutation. Which is why we use it to investigate genetic lineages.
>I assumed you get one side of your DNA from your mother, and one side from your father.
Yes, half and half. Some of your sperm have X chromosome, some have the Y chromosome. If the Y sperm fertilizes the female's egg (which always has an X chromosome), the offspring is XY, therefore male. But the rest of the genome is very similar functionally between the mother and the father. It's the sex chromosomes that differ greatly.
All the germ cells (sperm or egg) derive from normal cells in your body, so called somatic cells. But sperm and eggs only have half the DNA normally present in your body's cells, which happens through meiosis. So when they fuse with the other germ cell, be it sperm or egg, they obtain the other half of the DNA and have a normal quantity of DNA again.
>>9098426
>When a male produces sperm, is the Y sperm an exact replication of his Y Side of the DNA?
No, the human Y chromosome is highly susceptible to mutations as it is passed exclusively through sperm
>how does your body pick millions of pieces from your DNA from your mother and father and place them in the correct order in your sperm or egg cells? It can just pick the pieces and assemble brand new DNA?
The chromosomal DNA is replicated and then packed into chromosomes. Then segments are randomly crossed over between each chromosome in a pair. Then the germ cells are divided once more resulting in one pair of chromosomes (randomly from mother/father) in each of the four resulting sex cells. Look up "meiosis" for more information.
>>9098448
>>9098451
Okay so basically when a male produces a sperm cell, the DNA in that sperm cell is essentially genetic material grabbed from both the X and Y side, the tagged with a Y at the end making it a Y sperm cell? What is the actual process called for copying small bits from the DNA and producing half a dna strand for the sperm/egg cell?
Is this a meme?
No, it's quite a nice book, nothing extraordinary though. I liked it.
>>9098285
worth reading, but overrated.
can you repeat the question?
Ken Wheeler, the Tesla of our age.
https://www.youtube.com/watch?v=RXN2rttEAKo&t=1053s
Ken Wheeler, son of John Wheeler.
Confirmed for 170 IQ minimum
P H E N O T Y P E
What are some pop science books that are worth reading?
>>9098039
none of them
I'm reading the gene: an intimate history.
Pretty decent imo
>>9098051
So how does one keep up to date with going ons in other sciences? I do not have the time study biology in a serious way, but I'd like to know what's currently happening in the field.
how did people measure mountain height before, say, lasers?
>>9098008
probably some form of trigonometry
I think with by atmospheric pressure
math. you know the ancient greeks knew the circumference of the earth, right?
I'm a physics student and looking to switch to Linux but don't know what distribution to use.
The purpose is to:
-Write reports with LateX in TexMaker
-code small programs in Python
-Plot Data with gnuplot
-evaluate and analyze data, yet to settle on a program here
Looking at https://wiki.installgentoo.com/index.php/Babbies_First_Linux I guess either Mint or Ubuntu will do the job for me but I really don't know which one is better for my needs.
In uni I worked with openSUSE a few times, didn't like that one so much.
>>9097977
Tried, none bothered to respond but instead argue wheter to call it Linux or GNU/Linux.
>>9097980
lol that's just copypasta. just go with ubuntu or mint, you'll be fine. i recommend ubuntu but change the desktop environment to something that isn't unity, like cinnamon or xfce
Anyone else starting a professional or PhD program this fall?
Pharmacy school here. Kinda freaking out about the course load and all that debt I'm getting into
Also pls share your experiences, older /sci/entists
>>9097897
Yea i am, starting in a little over a week, just got assigned TA placement actually. Biochemistry though.
>>9097897
>debt
>for a PhD
You mean that... you are in debt to your advisor for being such a good person?
>>9097908
PharmD not PhD anon
Is there any valid argument against this? I would like to hear it.
Ehhh not necessarily either of those, depends on what you mean by that. I'm of the opinion the test score gap can be widely explained by cultural bias/heritability.
>>9097599
there's not a scientific one
there's conjecture and cultural-constructionist ones like in >>9097630 but there's no scientific basis for them
"cultural differences" can be explained by trans-racial adoption studies, which imply that performance of adopted children is in line with their race, rather than the household they grew up in.
unless you want to say that "culture" is racial, then you're back to square one and the data still implies that any difference in the performance and wealth of black populations is due to the difference in their IQs
>>9097599
SAT scores aren't a good indicator of intelligence
Also stop appropriating the ShitRedditSays brd you colossal tool
what do you believe is the greatest scientific achievement this millennium?
https://www.youtube.com/watch?v=kpk2tdsPh0A
>>9097567
Of all the possible known axiomizations of QMU and CTMU comes out the single most elegant from of social constructivism and monocentrism. Needles to say the applications of theoremhood to the "soft" sciences (As the sexist white pigs would denote them) is a step in the wrong direction, essentially, category theory turns out to be a framework for reality, the implication is that there is no reality aside from the one we construct through axiomatics.
it's a shame such a brilliant problem solving mind was wasted on optimizing a 20 year old video game. i've watched the whole thing and it's quite incredible to see what he came up with to complete the level that way. nonetheless.. it's that much effort for fucking mario. props to him for creating interesting content but honestly the speedrunner community's autism could be redirected somewhere much more useful
>>9097579
not even speed running lmao. it takes 12 hrs to build up speed.
https://www.youtube.com/watch?v=hSa-pwML4z4
https://www.youtube.com/watch?v=HtqwKaWI22w
Who else hype for climate change denying neanderthals getting a beat down by /ourguy/?
>>9097321
>>9097321
climate change is a hoax
>>9097336
He actually responded to that exact graph in one of his videos, can't remember which, you should check it out bro.
If the difference between now and a moment ago was/is the exact configuration of energy and mass in the universe then what is time?
Explain your shit better
>>9097130
1 second ago, everything that ever was is in motion to become what it is now. For example, a penny dropping to the floor has already been dropped and is expending it's energy to reach the ground. Even your brain, if you traveled back in time 1 second to magically create a clone it wouldnt be exactly you because different neurons would be firing and your blood flown through your body a little.
>>9097136
You are retarded, and so is this thread.
Can someone please explain question 21. I tried everything to factor this out, I'm lost.
>>9096969
Use synthetic division/long division.
f(2)=0 implies f(x)=(x-2)g(x) where degree of g is 1 less than f, so g(x)=ax^2+bx+c.
f(x)=(x-2)g(x)
Expand that out, easy to work out what a, b and c are.
Write f(x)=(x-2)(ax^2+bx+c) and I guess you're done.
expand the whole thing out and separate the terms with real coefficient from the terms with imaginary coefficients
I have a fuckton of free time in my boring job. What should I study all day to give my life meaning?
teleology
Porn
no matter what you study, your life will be completely devoid of meaning anyway
How do most people believe this kind of shit? Did you ever have any experiences of retards just denying obvious shit?
>>9096660
Science does not and cannot say anything about what is true. That doesn't mean it isn't useful, or that its methodologies can't build bridges or make accurate predictions, only that scientific statements about the world are necessarily not truths, otherwise, they wouldn't be scientific statements.
>>9096660
>psychology
>science
middle faf
>>9096660
>science = truth
Fuck off back to /reddit/.