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Mar
30
answered What is a good source that will help me classify protists?
Mar
29
awarded  Explainer
Mar
29
comment Expected time for a neutral allele to reach a frequency of $p_1$ when starting at frequency $p_0$
In the above paper, a key quantity is u(p,t), the prob. that an allele fixes at time t given starting freq. p. They cite a previous paper showing that u(p,t) satisfies a certain PDE. In your case, you want to modify u(p,t) to be a sort of first-passage-time probability (i.e. the prob. that the allele freq. reaches p1 for the 1st time at time t given initial freq. p). In this case, u(p,t) may no longer satisfy the same PDE as before (check that other paper). In order to proceed, you need to find the PDE that your new u(p,t) satisfies. Look up first passage time problems, it may help.
Mar
29
revised Is there a formula for determining the % of ligand bound to a given receptor in a mixture with multiple ligands and receptors?
Added a link to a useful reference
Mar
29
answered Is there a formula for determining the % of ligand bound to a given receptor in a mixture with multiple ligands and receptors?
Mar
29
revised Is there a formula for determining the % of ligand bound to a given receptor in a mixture with multiple ligands and receptors?
Made the notation easier to understand (switch to ligand L and receptor R)
Mar
29
revised Is there a formula for determining the % of ligand bound to a given receptor in a mixture with multiple ligands and receptors?
Properly formatted math in LaTeX for greater clarity
Mar
29
reviewed Approve How to increase the shelf life of yogurt without refrigeration?
Mar
29
reviewed Approve Location of embryo development in angiosperms
Mar
29
reviewed Approve Understanding conclusions that functional regions are under negative selection?
Mar
29
reviewed Approve How do BCAA's promote faster muscle recovery?
Mar
29
reviewed Edit Incremental denaturation of protein mixtures
Mar
29
revised Incremental denaturation of protein mixtures
Fixed grammatical errors
Mar
28
reviewed Edit What would happen if we had a device that produced oxygen inside of our lungs?
Mar
28
revised What would happen if we had a device that produced oxygen inside of our lungs?
clarified the wording.
Mar
23
comment Do changes in an organism's cell modify the genetic information it uses for reproduction?
Just saw your restriction to multicellular organisms. Less familiar with that, I'll let someone else answer that then!
Mar
23
answered Do changes in an organism's cell modify the genetic information it uses for reproduction?
Mar
23
comment Is the “concept of time” coded into the genome?
Something you might be interested in is circadian clocks, which are literally genetically encoded timekeeping devices. Although they can be entrained by environment, they can also "free run" in constant conditions cycling in the absence of light/dark cues. The core circadian clock in photosynthesizing bacteria called cyanobacteria consists of just three proteins. You can isolate them from the rest of the cell, and just like a watch taken from your wrist, these proteins will continue to oscillate in a 24-hour cycle. If that isn't a genetically encoded "concept of time," I don't know what is!
Mar
23
comment What determines the size and shape of a cell?
Can confirm, this is the exact question that motivates my research interests, and I can tell you that even now this is far from a settled question, in pretty much any organism.
Mar
23
answered Risk of autosomal dominant disorder