Ever wanted to learn a foreign language?

[THE BOUNCER]

mag, me and you should get together sometime. our brains are far more advanced then these people.

[dna9488]

SWEET, thanks a lot, I owe you BIG TIME. The X's and Y's mean sex chromosomes, and the ww mean alleles. But ya I will go ahead and re-word some of my explanations. Thanks again.

[dna9488]

Originally Posted by THE BOUNCER

mag, me and you should get together sometime. our brains are far more advanced then these people.

i think someone's been


U really think you know this info witout googling it??????

[magdalena]

DNA, no problem, I am happy I could help.
If you have any other bio problems feel free to ask

[THE BOUNCER]

Originally Posted by dna9488

U really think you know this info witout googling it??????

sure do. who dosent know about the hjoc.6 -49 chromosome. i thought it was basic knowledge.

[Shibby]

Originally Posted by dna9488

So she points out the mistake and you take the credit man. Thats sooo wrong
.

Don't worry, I plan to take all the credit on your mistakes while she "schools" you in biology.






.






No, I don't have any problem with living vicariously through my wife

[magdalena]

Originally Posted by THE BOUNCER

sure do. who dosent know about the hjoc.6 -49 chromosome. i thought it was basic knowledge.

I am not sure what are you talking aboout...Drosophila melanogaster of Homo sapiens cause as far as I am concerned humans only have 46 chromosomes....

So maybe, after all your brain is not as advanced as mine

[dna9488]

Originally Posted by THE BOUNCER

sure do. who dosent know about the hjoc.6 -49 chromosome. i thought it was basic knowledge.

U sure ur ok??????????




wanna go ahead and pass me the joint ur smokin???

[Shibby]

Originally Posted by magdalena

I am not sure what are you talking aboout...Drosophila melanogaster of Homo sapiens cause as far as I am concerned humans only have 46 chromosomes....

So maybe, afterall your brain is not as advanced as mine

PWNED BIATCH!!! Mwahahaha

[dna9488]

Originally Posted by magdalena

So maybe, after all your brain is not as advanced as mine

[Stonecold54]

Originally Posted by THE BOUNCER

sure do. who dosent know about the hjoc.6 -49 chromosome. i thought it was basic knowledge.

I think I shot some of that last week.

[THE BOUNCER]

Originally Posted by magdalena

So maybe, after all your brain is not as advanced as mine

my muscles are bigger. neener neener.

[Solstice106]

drosophila genetics is strange.... in humans, an XXY would be a male and an XO would be a female. that's pretty interesting.

[dna9488]

Originally Posted by Solstice106

drosophila genetics is strange.... in humans, an XXY would be a male and an XO would be a female. that's pretty interesting.

YUP

and a YO means ur dead

i don't like working with fruit flies. In my genetics lab we had to drug them, find out what sex they were using a microscope, and than put 10 males and 10 females in one test tube wit nutrients, and observe the offspring and their phenotypes.....SOOOO BORING.

[FrankTheTank55]

Originally Posted by magdalena

To make both of you happy ...

In order to understand the theory you are talking about it is essential to understand Mendel's Laws.
During meiosis, the cell undergoes many divisions: in meiosis I you have Prophase, Methaphase, Anaphase, and Telophase. Here you will have two daughter cells that are different (the main point of meiosis I is to separate homologous chromosomes)In meiosis II you have pretty much the same, but the outcome gives you 4 daughter cells that have totally different genetic makeup (the point of meiosis II is to separate sister chromatids).
Each chromosome contains genes that are located in certain manner. During meiosis (some books say that it is during late Prophase) a cross over can occur between sister chromatids and when they are pulled apart in telophase II, they create different genetic outcome.
If you go back to Mendel, the idea of the chromosomes is simple. If you have two chromosomes that are the same, you create homozygote. If you have a variation, you create a heterozygote. Let use an example, let say that blue eye color is coded by BB and brown color by bb. If you cross the parents that are homozygous for blue and brown eyes (which is two alleles that are the same, BB or bb) the offsprings will be all blue eyed since I designated blue eye color as dominant and this one will be expressed in all the offsprings.
T.H.Morgan made some interesting studies with eye color in fruit fly. "Crossing of a white-eyed male fly with a red-eyed female. The offspring were all red-eyed, but the second generation was 75% red-eyed and 25% white-eyed. Furthermore, the white-eyed flies were all male, and there were twice as many red-eyed females as red-eyed males"(The Path to the Chromosome Theory of Heredity).
The support for this theory is that presence of disjunction. If the chromosome doesn't separate from its homologous chromosome or the sister chromatids don't separate you end up with monosomy which can give you problems like Turner syndrome. If there are more chromosomes, you end yo with trisomy, or monosomy and an example would be Down syndrome.
The take home message would be that Sutton and Boveri combined Mendel's work, added chromosomal behavior to it and named it The Chromosome Theory of Heredity/Inheritance.
Where heterozygous chromosomes (XY) will give you a male which is totally different from homozygous (XX) female.

Sorry for throwing so much at you, if anything is unclear just let me know, I will try to do better job explaining. I am just not sure how much genetics you know, so I left it as you have a pretty good idea of what is going on. Hope that helps.

Why did I just read this whole thing????.......LOL