Explain to me in detail how two parents can fit inside one child
Does one half of the DNA that is proved to be inferior simply die?
Does one half of the DNA that is proved to be inferior simply die?
Any hereditary geneticists here?
- Thread starter Vicarious Reality
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Vicarious Reality said:
Seriously though, what are you asking for? A lesson in biology and genetic traits or what physical traits we share with our parents?
Each parent provides half of the chromosomes - 23 from the mother, 23 from the father. The cells provided by each (Sperm and Egg) only contain 23. Nothing is 'lost.'
And you don't need a geneticist for this level of rudimentary biology - You need a middle school text book. Failing that, wikipedia will cover this kind of stuff.
https://en.wikipedia.org/wiki/Human_reproduction
And you don't need a geneticist for this level of rudimentary biology - You need a middle school text book. Failing that, wikipedia will cover this kind of stuff.
https://en.wikipedia.org/wiki/Human_reproduction
Pretty much this. Just go to wiki. But to simplify, what Accused said.AccursedTheory said:
Human chromosomes is 23 pairs(total 46) so you get 23 from mother and 23 from father.
Each pair(pair #1 to #23. Kind of like screwdriver sets that comes with pairs) is required and missing or additional chromosome(s) will cause fatal defect.
You get chromosomes from your parents RANDOMLY. inferiority or superiority of DNA itself does not matter during reproduction, with exception of some special cases which you can ignore.
If DNA happens to be inferior, the owner of said DNA and his/her children(assuming that this person can get this far) will be weeded out by those with better DNA. Only the strong survive...
Hereditary geneticist... Sounds like a title for people who are born to do it.
OT: Anyway, like the nice people up there said, the genes of the two parents combine and merge traits, with a number of factors determining which ones are dominant and recessive. The two jutxapositions don't mean one will sprout out more than the other, just that one seems more likely. It is a matter of fact that there are alot of blue eyes in my family, but this is the weaker trait against the brown eyes of one of the parents. This would probably mean that one of them was largely built for bluish eyes while the other had the trait for brown eyes and perhaps blue eyes recessively, thus giving the sorting genes more of a 'vote' for being more present numerically speaking. Now, of course no system is perfect. You end up with children who did not develop exactly right for various means, but the genes are still all in there. It all cooked in one pot, so to speak.
OT: Anyway, like the nice people up there said, the genes of the two parents combine and merge traits, with a number of factors determining which ones are dominant and recessive. The two jutxapositions don't mean one will sprout out more than the other, just that one seems more likely. It is a matter of fact that there are alot of blue eyes in my family, but this is the weaker trait against the brown eyes of one of the parents. This would probably mean that one of them was largely built for bluish eyes while the other had the trait for brown eyes and perhaps blue eyes recessively, thus giving the sorting genes more of a 'vote' for being more present numerically speaking. Now, of course no system is perfect. You end up with children who did not develop exactly right for various means, but the genes are still all in there. It all cooked in one pot, so to speak.
Does the potential of having a "bubble butt" count as hereditary? It's a big-ass problem on my mom's side of the family regardless of one's overall body shape... *does a double take on one's own posterior*
Other than that, if I had children, then they would have an even slighter chance of developing hazel eyes during pregnancy...
Other than that, if I had children, then they would have an even slighter chance of developing hazel eyes during pregnancy...
- Mar 31, 2010
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To clarify what's already been said, no, there's no in-built selective process between 'superior' or 'inferior' DNA. Every parent has two copies of each chromosome, and only one copy will be passed onto their child (so the child has one copy from each parent). It's completely random which chromosome happens to be passed on, and this occurs back when the eggs and sperm are being created. This can be useful for predicting traits within a family, any gene has a 50% chance of being passed to the next generation in each child.
Pirate Of PC Master race said:
As others said, it's fittest, not strongest. But strongest sounds cooler.
Hereditary genetics.. Basically all you need to know if you are male is that if your moms dad is/was bald so are/will be you.
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Yeah, the male pattern balding gene is carried on the X chromosome, so you're more likely to resemble your maternal grandfather than your father in that regard (if you're male, your X chromosome always comes from your mother, as your Y has to have come from your father). Only a 50% chance of that happening though, as if you're lucky you might have inherited your grandfather's non-balding X chromosome. At-least that's what I hope in my case!Telefonegun said:
(Edit: Rewrote the post slightly as I realise I misread it the first time).
You don't need someone specialising in inheritence for this, any biologist knows this as its a very basic biological question.
In very brief and very much simplified: human gametes (sperm and ova) contain half the chromosomes required to make a person and are created through a process called meisosis. Which chromosomes each individual gamete contains is random. Also the composition of genes on those chromosomes varies because of chromosomal crossover which occurs in the process of forming the gametes.
During the process of reproduction you gain half from each parent to create a viable zygote (fertilised egg) which then develops into an embryo and eventually into a person.
The whole concept of "inferior" genes, however, is a much more complex thing; genes are generally speaking not inherently "inferior". There is no process to separate out "inferior" genes inherently and what "inferior" can mean will vary a lot by circumstances. The whole point is that those with better traits should be more successful and thus more likely to pass on their genes. As a very simple example: if a gamete contains a gene that happens to be lethal to the embryo then that embryo dies before it becomes a person. Thus that gene does not get passed on. Obviously it is more complicated than this in most cases and more subtle, but that's the basic idea.
A more complex example would be sickle cell anaemia. Sickle cell anaemia comes about from inheriting two faulty genes for the development of haemaglobin; it is a serious and potentially life-threatening life-long condition. So it would be expected to be selected against and generally decline in the population (it is uncommon in Western Europe, for example). However it is very common in places like Africa and Asia. Why? Because being a carrier of the sickle gene has a protective effect against malaria [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3499995/] through a process which prevents the disease taking hold [https://www.newscientist.com/article/dn20450-how-sickle-cell-carriers-fend-off-malaria/]. So being a carrier, but not developing sickle-cell anaemia, is a significant advantage in these areas. Consequently the gene flourishes in the population, resulting in a large population of affected children being born from parent carriers.
Source: Me. I'm a biological scientist. Although full disclaimer - I'm not a specialist in human reproductive genetics or malaria, this is all stuff I learned from a combination of back in school and my undergraduate degree.
In very brief and very much simplified: human gametes (sperm and ova) contain half the chromosomes required to make a person and are created through a process called meisosis. Which chromosomes each individual gamete contains is random. Also the composition of genes on those chromosomes varies because of chromosomal crossover which occurs in the process of forming the gametes.
During the process of reproduction you gain half from each parent to create a viable zygote (fertilised egg) which then develops into an embryo and eventually into a person.
The whole concept of "inferior" genes, however, is a much more complex thing; genes are generally speaking not inherently "inferior". There is no process to separate out "inferior" genes inherently and what "inferior" can mean will vary a lot by circumstances. The whole point is that those with better traits should be more successful and thus more likely to pass on their genes. As a very simple example: if a gamete contains a gene that happens to be lethal to the embryo then that embryo dies before it becomes a person. Thus that gene does not get passed on. Obviously it is more complicated than this in most cases and more subtle, but that's the basic idea.
A more complex example would be sickle cell anaemia. Sickle cell anaemia comes about from inheriting two faulty genes for the development of haemaglobin; it is a serious and potentially life-threatening life-long condition. So it would be expected to be selected against and generally decline in the population (it is uncommon in Western Europe, for example). However it is very common in places like Africa and Asia. Why? Because being a carrier of the sickle gene has a protective effect against malaria [http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3499995/] through a process which prevents the disease taking hold [https://www.newscientist.com/article/dn20450-how-sickle-cell-carriers-fend-off-malaria/]. So being a carrier, but not developing sickle-cell anaemia, is a significant advantage in these areas. Consequently the gene flourishes in the population, resulting in a large population of affected children being born from parent carriers.
Source: Me. I'm a biological scientist. Although full disclaimer - I'm not a specialist in human reproductive genetics or malaria, this is all stuff I learned from a combination of back in school and my undergraduate degree.