16,915 reputation
1562
bio website berkeleybiolabs.com
location Berkeley, CA
age 49
visits member for 2 years, 4 months
seen 9 hours ago

PhD structural biology. I do bioinformatics in the SF bay area. Interested in systems / synthetic biology, expression analysis and machine learning.

Working with a Biotech Accelerator in the East Bay. http://www.meetup.com/Berkeley-Biolabs/

I believe that biology and other stackexchange sites should welcome newbies and encourage dialog about science, evolution, technology and etc.


9h
comment How can CI repressor both activate and repress $P_{RM}$ promoter found in $\lambda$ phage?
many DNA binding proteins have more than one role... ;)
9h
comment Can the body of any organism on Earth live without impairment both in vacuum, and within Earth's atmosphere?
I'd like to add that most of the answers here have the organisms in hibernated forms. I think there is a fungus that was growing in the space station, but I'm not sure anything on earth is functional in the vacuum of space, only hibernating... anyone?
16h
reviewed Excellent In biosynthesis of cysteine and methionine, where does the sulfur come from?
16h
revised Does the genetic material the sperm carries affect it's physical properties
added 219 characters in body
16h
comment What is the main challenge in creating a chemical male contraceptive?
While you may be right after some period of adjustment that male contraception may be adopted, there is the fact that men are not left carrying the baby, a fact of which some biology does take note of. Men often complain about condoms for instance. If you look at the link I sent above there are reversable (nonchemical) male contraception available. If you ask 20 of your male friends how many of them have adopted? Attitude reports like the ones you all link are not absolutely proof of your point, btw.
22h
comment What is the main challenge in creating a chemical male contraceptive?
see: newmalecontraception.org/nonhormonal-pills As a market, I think men have a tendency not to want to take chemicals contraceptives...
1d
comment Does the genetic material the sperm carries affect it's physical properties
That is indeed the classic example of active sperm selection isn't it? There are books about it now. @Darwin if you want you can search at bn.com/amazon for 'sperm competition'. its a big world out there. As an equal opporunity presentation, here's a picture of a team of sperm using hooks on their heads to cooperate and swim together. nature.com/news/2010/100120/full/news.2010.22.html
1d
comment Does the genetic material the sperm carries affect it's physical properties
@GriffinEvo are you thinking of selfishness, sometimes referred to as Drive? If so you have brought up one of the most famous examples of sperm activity - a locus which causes a sperm that contains it to actually inhibit other sperm even if they come from the same male. A classic example of sperm genes in action and evolutionary biology.
1d
comment Does the genetic material the sperm carries affect it's physical properties
I really don't know who makes these decisions, but I'm not sure this is an unanimous opinion nor one that is necessary to hold in all circumstances. you are of course free to have whatever opinion you like.
1d
comment Does the genetic material the sperm carries affect it's physical properties
Hey Darwin - I've added a note above. you have to remember that a substantial of human genes are found in yeast. Those core functions are absolutely necessary for viability. Our lives as single celled organisms use most of the same genes. neat, eh?
1d
revised Does the genetic material the sperm carries affect it's physical properties
added note
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comment Does the genetic material the sperm carries affect it's physical properties
what does a sperm do besides reproduce? The haploid phase of some animals like coral can be weeks long. Yeast haploid genetics are a big topic in research and the halpoid phase can be maintained for quite a while. Here's a reference for sperm mitochrodrial transcription. Sperm are not the main system for research of hapoid life cycle though humrep.oxfordjournals.org/content/22/6/1585.short
2d
answered Does the genetic material the sperm carries affect it's physical properties
2d
awarded  Nice Answer
2d
revised Does recombination increase the additive genetic variance for fitness?
more explanation
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comment Does recombination increase the additive genetic variance for fitness?
I added a little bit here, but I'm not sure what the tie in to Haldane's rule is explicitly. Haldane's Rule applies to specific cases where there is interspecies breeding and relates to speciation. Can you put in some links if you have any? Or perhaps i've helped with what I've put up here.
2d
revised Does our eyeball increase in size as we grow?
added 251 characters in body
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comment How does GC-content evolve?
Glad to hear it! There is now a lot of research going on to identify processes which mediated and accelerate adaptation and therefore evolution. On this level there isn't so much controversy I think...
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answered Does our eyeball increase in size as we grow?
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revised How does GC-content evolve?
new reference, clarity