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Jun
23
comment Is there an advantage to antibacterial soap?
I'd note that less bacteria on your hands is not necessarily a good thing. The natural microbiome on your hands has noticeable protective effects.
Jun
10
comment Recessiveness of allele for protection of organism
Honestly, I think the whole concept of recessive and dominant is unhelpful when trying to understand genetics and we'd be better off teaching the concepts in this answer from the very start.
May
21
comment What is the point at which abiogenesis is complete and evolution begins?
Yeah, that's it. Although even then I'd be wary of assuming that there is a single clear line dividing life from non-life, so the exact end point of abiogenesis will be ill-defined.
Mar
22
comment Why are fruits so large compared to their seeds?
@MarchHo: Okay, fair point. What I mean is that it's not just that they have smaller seeds it's that these seeds are, as you say, totally non-viable.
Mar
22
comment Why are fruits so large compared to their seeds?
Just to note, the Cavendish banana, like all other edible bananas doesn't just have small seeds, it is seedless. In fact, all banana plants (of the same variety of banana) are genetic clones of one another produced by vegetative reproduction rather than sexual reproduction.
Mar
10
comment Reasons why living fossils exist?
@Jay: I'm sorry but I don't understand what you're asking?
Mar
5
comment Does DNA have the equivalent of IF-statements, WHILE loops, or function calls? How about GOTO?
Even in parallel programming languages, each statement in executed sequentially. It's just that there are multiple "threads" of execution going at the same time. DNA is neither data nor program. The analogy is totally inaccurate.
Mar
4
comment Does DNA have the equivalent of IF-statements, WHILE loops, or function calls? How about GOTO?
I'm not saying that DNA needs proteins to execute its functions; I'm saying DNA is fundamentally unlike computer code.
Mar
4
comment Does DNA have the equivalent of IF-statements, WHILE loops, or function calls? How about GOTO?
While your examples are clever I feel the analogy used here (DNA against computer code) is so very poor as to be misleading.
Feb
1
comment Why did life not evolve to use radio?
@DanDascalescu: (1) What do you mean there is no transmitter? Bats create the sound they listen for echoes of and (2) Bats' echolocation works by further evolution of the already-selected-for abilities to hear and make sounds.
Dec
3
comment Why only female mammals have well developed mammary glands?
I addressed your first point in the second paragraph. Male investment is high in humans, it is not in mammals in general and the dimorphism in mammaries did not evolve in humans. As to your second point, it's certainly true that males invest in reproduction to similar levels to females but in the individual offspring the investment is higher in the female.
Dec
2
comment Why only female mammals have well developed mammary glands?
Incidentally, the XY system is not used in all mammals so there is a slight lack of generality here.
Dec
2
comment Why only female mammals have well developed mammary glands?
I think this answer, while of decent quality, does not actually address the question the OP is asking. This is the mechanics of how there is a difference not the reasons why there is a difference.
Dec
1
comment Why are some fungi poisonous?
@Anixx: I'm not aware of such a claim and would be interested in a source? Even if it is true I am quite certain that those mushrooms will not be poisonous.
Nov
25
comment In males, why it is difficult to control orgasm?
Both men and women can learn to control orgasm for prolonged periods. It is a reasonably common part of BDSM sexual practices to insist that the 'sub' requests permission before orgasming.
Nov
5
comment When writing about past research should I use the species name they employed or the modern version?
I think you're confusing more than one thing here. Campylobacter fetus is the correct, current, internationally recognised name for the species. Like many species, it has been moved to a different genus than it was originally assigned to. The principle of priority applies when the same species has been identified by different researchers.
Sep
23
comment How many humans have been in my lineage? Is it almost the same for every human currently living?
@Joe: It's a model. Any model will be, by it's nature, limited. The limitations are discussed in the paper, as is there potential impacts on the resulting number.
Sep
23
comment How many humans have been in my lineage? Is it almost the same for every human currently living?
@Joe: It's not my claim. It's the number given in the primary literature source I linked to. Other estimates exist but even then they only push it back to around 8000 years ago, still a small period of time in comparison to the time since the human/chimp split.
Sep
23
comment How many humans have been in my lineage? Is it almost the same for every human currently living?
@MooingDuck: Perhaps you'd like to read the link I gave.
Sep
22
comment How many humans have been in my lineage? Is it almost the same for every human currently living?
Apparently I fail at cut-and-paste, corrected.