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location Boston, MA USA
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visits member for 2 years, 7 months
seen Jun 13 '13 at 13:30

Apr
20
answered Is there a dominant gene for right-handedness?
Apr
19
revised Possible? When a pregnant woman suffers an organ damage, fetus would send stem cells to the damage organ to help repair it?
added 16 characters in body
Apr
18
answered How do baby animals that primarily subsist on cellulose get their initial gut flora?
Apr
18
answered Possible? When a pregnant woman suffers an organ damage, fetus would send stem cells to the damage organ to help repair it?
Apr
17
comment What's the aim of genetically modifying of foods/organisms?
I believe that there is a GMO potato now grown in Europe for paper production.
Apr
16
comment What's the aim of genetically modifying of foods/organisms?
There's also a similarly modified cotton plant. While not nutritious, this cotton can be cheaper to produce. A GMO cotton could be engineered to require less treatment to make cloth, with lower environmental impact. I don't think the golden rice actually had very much bioactive vitamin A per serving.
Apr
16
revised What's the aim of genetically modifying of foods/organisms?
added 162 characters in body
Apr
16
answered What's the aim of genetically modifying of foods/organisms?
Apr
13
comment Mechanics of going from DNA sequence to metabolic network
In general, assignments of function are based on sequence similarity (tools like BLAST) - comparing protein sequences to those with known or demonstrated function - or identification of functional motifs as in the Pfam, SMART, INTERPRO and others (ca.expasy.org/tools).
Apr
13
answered Mechanics of going from DNA sequence to metabolic network
Apr
9
answered What does the 34/70 in Saccharomyces pastorianus Weihenstephan 34/70 stand for?
Apr
9
comment Are there differences in DNA between humans of today and humans from 2000 years ago?
I did not imply that the epigenetic changes are heritable. The environment changed over the last 2000 yrs and some of those changes are constantly acting upon the genomes of successive generations. The question asked about a comparison of a current human genome with one from 2000 yrs ago. Because the environment is different, I expect that population-wide we would see differences in epigenetic marks.
Apr
6
comment Why do some fruits have a much wider range of acceptable sizes than others?
It's fine as one question. Each aspect of jmusser poses here informs the other. It's all related.
Apr
4
revised Are there differences in DNA between humans of today and humans from 2000 years ago?
added 158 characters in body
Apr
4
comment Are there differences in DNA between humans of today and humans from 2000 years ago?
Exactly, I wouldn't understand down votes either. "[D]ifferences in the genome" is a legitimate question. While one may at first think of sequence changes, and some mitochondrial and Y-chromosome haplogroups may have arisen within about 2000 yrs ago, changes at the level of methylation, acetylation and other levels fits the question.
Apr
3
answered Are there differences in DNA between humans of today and humans from 2000 years ago?
Apr
3
awarded  Critic
Apr
3
comment What is the advantage of using starter cultures for growing bacteria?
If a culture is too dilute, it can have a reduced doubling time.
Apr
3
answered Why do some fruits have a much wider range of acceptable sizes than others?
Apr
1
awarded  Nice Answer