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Mar
2
comment What's the point of glycolysis in fermentation?
Turning 2 ATP into 4 ATP isn't good?
Feb
21
comment Does recombination increase the additive genetic variance for fitness?
I don't think this response addresses the quote since this concerns crossing over. The quote says "bringing together favourable alleles from different chromosomes", which doesn't involve crossing over.
Feb
21
revised Phylogenetic tree
deleted 3 characters in body
Feb
21
answered Phylogenetic tree
Feb
21
comment How does the brain know where a signal came from? What is the addressing system
If you perceive a sensation, it had a path; the signaling is indeed massively parallel. Some sensations are processed in the periphery and a derived signal sent on to the brain; The density also varies (the hands have many nerves, the back, few). There is also peripheral processing like the knee reflex. Also there are nerves that have little or no flow to the brain; see autonomic nervous system. If this answer is what you wanted, you can accept it by clicking the checkmark to the left.
Feb
20
answered How does the brain know where a signal came from? What is the addressing system
Feb
14
comment why can't we digest cellulose
We don't digest cellulose; it just passes through us unchanged.
Jan
29
answered How good is information transfer between the hemispheres of the brain?
Jan
27
comment PedigreeAnalysis Genetics
The G's seem mostly ok, but you don't know that Maria's grandmother is "GG". The A/a's are messed up; you're treating the disease allele as recessive, but it's dominant (XA). [but then I have no formal training; I've never had a genetics course or even college biology.]
Jan
26
comment PedigreeAnalysis Genetics
ApothemCyte, the diagrams are concerned with both the autosomal disease and the X-linked disease; look at whether the person symbol is shaded on the left side or the right side.
Jan
25
awarded  Custodian
Jan
25
reviewed Leave Open How did fish evolve the ability to breathe on land?
Jan
21
awarded  Custodian
Dec
28
awarded  Enthusiast
Dec
23
awarded  Yearling
Dec
21
revised How much DNA of mitochondrial origin is incorporated in main cell's DNA?
small prose clarification
Dec
18
answered How much DNA of mitochondrial origin is incorporated in main cell's DNA?
Nov
26
answered Biodiversity is restricted by genome combinatorics?
Nov
8
comment Are wild cats the same species as house cats?
@fileunderwater, Yes, species is useful for thinking about how groups relate and evolve; when you want to look closely, though, it's good to remember the species boundaries are gray, not black-and-white.
Nov
7
comment Are wild cats the same species as house cats?
The "species" concept is an attempt to fit a simple human conceptual category onto a reality that is not that simple. The reality is a continuum of reproductive compatibility between an individual and any other organism rather than a binary compatible/incompatible relationship which would actually be a basis for defining "species".