Increased genome and past traits

Genetics as it applies to evolution, molecular biology, and medical aspects.

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suyuti
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Increased genome and past traits

Post by suyuti » Fri Jun 20, 2008 10:26 pm

Ok so i've got 3 questions.

Firstly, do humans have genes all the way up till their final common ancestor(or just within the homosapiens)?
Does the junk DNA contain genotypes of previous ancestors amongst humans(like great grandfather etc)?
Does the human genome increase in size every generation or few generations?

Thanks.

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mith
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Post by mith » Sat Jun 21, 2008 1:57 am

I hope you're not expecting yes/no answers.
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Darwin420
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Post by Darwin420 » Sat Jun 21, 2008 4:17 am

AHAH big demand. Umm hard to say? I don't think there are any definite answers for that, but if you find some articles dealing with these topics, hook a brother up.

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suyuti
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Post by suyuti » Sat Jun 21, 2008 8:28 am

Well i would like yes/no answers if they exist or are known but i don't mind others as long as they give some accurate idea on the questions.
I haven't come across any discussion on this topic though unfortunately. Anyone know any articles?
Personally i didn't know these are hard questions.

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mith
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Post by mith » Sat Jun 21, 2008 7:28 pm

they're not particularly hard. For instance #3, Just look at ways the genome changes. The problem you'll soon find is that there's really not a particular way the genome goes...there's ways it can increase and ways it can decrease.
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suyuti
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Post by suyuti » Sat Jun 21, 2008 9:10 pm

Oh ok thanks, any links?
So we don't know the general trend over generations(within a species) of the genome size(not in weight but in the number of nucleotides)? In humans i mean.

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Post by Darby » Sun Jun 22, 2008 12:46 am

We share genes with virtually all other living things, even bacteria. The similarities across a broad spectrum have been what has led to some evolutionary biologists becoming focussed on genetic processors rather than the genes themselves.

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