Tagged Questions
4
votes
0answers
59 views
What is the evolutionary reason behind the fragility of teeth?
Almost all organs in the human body have a rather large threshold within which the organ or tissue is capable of repairing itself using materials supplied by the body, whether it's made from organic ...
1
vote
1answer
57 views
Agony, Hydrophobia and viruses in the light of evolutionary principles
I'm undergraduate physics student, but I've always been interested in biology. So I have a couple of questions about an application of the evolutionary principles to practice.
Agony as the last ...
4
votes
1answer
114 views
Which sex has higher variance of reproductive rate in modern societies - male or females?
Who has a more varied reproduction rate in modern western societies - men or women? The average rate is the same of course, but I wonder which sex have higher variance - higher variance means that ...
3
votes
2answers
145 views
Why people like to see pornographic scenes, but do not feel the same about eating scenes?
This question may seem funny, but I think biology must have good answers.
I think no more explanation is needed.
I really thought about this and searched for an answer, but there is nothing yet.
If ...
1
vote
1answer
51 views
Interlocus Contest Evolution means suicide?
I was reading Matt Ridley's "Genome" book. I am trying to understand the Interlocus Contest Evolution in his X-Y chapter. I do not understand why the X and Y chromosome would want to kill each other. ...
0
votes
1answer
125 views
From which ancestor species did humans inherit orgasm?
From what ancestors did humans inherit orgasm?
Do fish experience orgasm?
Are the male and female orgasm the homologues that can be traced to the time when there was no difference in sex between ...
8
votes
6answers
538 views
Human evolution: Where *exactly* did the first human come from, whose parents were not?
Layman here. So I have never really quite understood this facet of human evolution, (or any other for that matter), in that, I understand the evolutionary process, but I get lost on the 'border' ...
8
votes
3answers
214 views
How did the human brain evolve?
A common question posed is, "how did the eye evolve?", because the eye is so complex. However, this has been answered rather clearly and there are several examples around the world of animals in ...
10
votes
1answer
336 views
Is there an evolutionary advantage to crying when sad?
It seems as though the act of crying when sad does nothing to relieve that sadness. Is there an advantage to crying from an evolutionary perspective, or is it the end result of a different process? ...
9
votes
1answer
116 views
In which order did the cells of the immune system evolve?
Thinking about how complex the interactions between different types of immune system cells (T-helpers, T-Killers, Phagocytes, B-Cells etc.) are, it's fascinating how they all combine to get the ...
13
votes
4answers
655 views
Can two humans with 44 chromosomes produce viable offspring?
It is known that there are very few individuals having 44 chromosomes, not the usual 46 chromosomes.
One example is a male in China: the first article, the second article.
The other is a female in ...
13
votes
8answers
3k views
Why have humans evolved much more quickly than other animals?
Humans have, in a relatively short amount of time, evolved from apes on the African plains to upright brainiacs with nukes, computers, and space travel.
Meanwhile, a lion is still a lion and a ...
9
votes
3answers
1k views
Height and natural selection in humans?
I watched the documentary "Evolve" recently and in the segment on "size" Scott V. Edwards, Harvard evolutionary biologist mentioned the idea that humans might evolve to be 7' tall in 'hundreds of ...
