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8

There is a reason for prevalent usage of log2 and log10 compared to loge in biology and other experimental sciences. Usually while doing measurements we are generally interested in fold changes and we generally talk in the sense of two-fold (or multiples of two) or ten-fold. Doubling is a common phenomenon at least in case of growth and so a two-fold change ...


4

Your germline DNA remains the same no matter what you do in the growth process (The DNA of a child is the same as the DNA of the adult). What does change is the expression of the DNA (transcriptomic profile), other regulatory factors (Epigenetic modifications), alternative forms of the same DNA expressed differently (splice site variations and alternative ...


4

The word density in the medical term bone density is used to quantify only the mineral content of the bone (bone mineral). It's not intended to describe the total mass density of the bone like we are used to from physics. This is all on wikipedia: http://en.wikipedia.org/wiki/Bone_density Thus, when one say that a Grizzly bear have 10 times the bone ...


3

An answer is found at the Wikipedia page for Taipan: The common name, taipan, was coined by anthropologist Donald Thomson after the word used by the Wik-Mungkan Aboriginal people of central Cape York Peninsula, Queensland, Australia. This passage is citing Sutton. 1995. Wik Ngathan Dictionary as support. I cannot evaluate the truth in this statement ...


3

I think the Wikipedia entry on Colonies in biology is helpful. It writes: ...a colonial organism can be distinguished from a conventional multicellular organism by the looser association and repeating nature of its component subunits—perhaps with specializations, but still visibly similar. The components can also be recognized as organisms in ...


1

I am quoting this web page http://spectrum.ieee.org/consumer-electronics/gadgets/backyard-star-wars which describe a prototype of a system to kill mosquitoes by means of a LASER, for what regard the speed: Mosquitoes fly up to a meter per second. This speed is compatible with 1.2 meter per second quoted in the paper SNOW, W. F. Field estimates of the ...


1

It seems that lungfish display the beginnings of a double circulatory system:


1

The building of a bridge on a river seems like an example of habitat fragmentation. There are a number of reasons why this may be detrimental to the animals. Reduced resources available. I'm not too familiar with dolphins, but all animals need food, shelter and a place to raise their young. A smaller habitat can't support as many animals due to limited ...



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