All Questions
17 questions
3
votes
1
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66
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Can hunting of large specimens of a species make the size and weight of the species tend to be smaller?
Siberian tigers in the wild don't grow as much as they used to be in past (in the 1900s).
Their average weight was measured 176 kg in 2005 study. But it was also said that those tigers observed in ...
- 31
-2
votes
1
answer
147
views
The Perfect Predator? [closed]
I’m not a biology major or even studying it in any way so I apologize if this makes no sense.
I’m curious, if say the Jurassic Park team came up to you and asked you to genetically engineer the ...
- 1
0
votes
1
answer
293
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If coelocanths are more related to humans than groupers -does a Coelocanth's DNA literally have more sequences in common with a human than a grouper?
Would a coelocanth and a human still have more sequences in common than a coelocanth and a grouper? Would the coelocanth and human dna basically "look" more similar than either would to a ray-finned ...
0
votes
1
answer
105
views
What species would this be?
A common way to define species can be found on Wikipedia:
A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can ...
- 103
0
votes
0
answers
31
views
Is Wikipedia a good source of taxonomy? [duplicate]
I have been quite interested in biology lately,and I would like to know whether it is a good choice to look up taxonomic information there.
1
vote
1
answer
571
views
Why do some animals have beards?
Why do some animals such as some Goats, Ibex, Orangutan etc, have long well-shaped beard like men?
- 67
1
vote
0
answers
35
views
Overall, for the most part, which is more important--capturing prey or surviving predators or parasites?
For animals in nature, does selection intensity tend to be stronger upon abilities used against parasites or predators or abilities used against prey? Any empirical reports would be appreciated.
I ...
- 466
0
votes
1
answer
73
views
Bottleneck effect
Is it true that animals that faced a severe bottleneck will have genetic deficiency for a long time? Does it mean they will all look the same for a long time?
1
vote
0
answers
43
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Facial uniqueness of some animals of the same species [duplicate]
Do birds of the same species ,such as each pigeon that we see in cities, have unique facial geometries (facial phenotypes) regardless of their feather ,colors, spots etc? Sometimes it is almost ...
- 11
4
votes
2
answers
574
views
What determines the sex of hybrid offspring?
I'm aware of the usual definition of Haldane's rule, which says that, if the offspring of inter-specific hybrid offspring are sterile, then the sterile offspring will be of the heterogametic sex. That ...
- 41
-2
votes
3
answers
10k
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Did cats evolve from monkeys ? or vice versa?
Did cats evolve from monkeys? or vice versa?
How similar are the genes of cats and monkeys?
What is the proof that they are related or that they are not related?
Most monkeys climb in trees and ...
- 153
2
votes
3
answers
3k
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Are domesticated animals really "more intelligent," or is that a myth/misunderstanding?
Often do I hear people speaking of how the domestic house cats are more friendly, less ferocious, less savage-like, and smarter and/or than their distinct but equivalent feline-species friends, like ...
user11653
8
votes
5
answers
982
views
Theoretically, is domestication of (virtually) any animal possible?
Looking at ones that manage well alongside us human animals, such as dogs and cats, we see that this is possible for evolved, distant animals to have heritable, preferable traits around people. ...
- 89
10
votes
3
answers
677
views
Can any species be bred selectively/engineered to become as diverse looking as dogs?
I've done some research and it appears that dogs are the most diverse looking single species of mammals. The questions that interest me is - are dogs special in respect to genes/gene activation ...
- 6,535
6
votes
3
answers
2k
views
Is the theory of evolution being disproved by bats?
For some species the Darwin's theory evolution makes perfect sense. I can easily imagine how, for example, the giraffe has evolved to its current appearance: the natural selection was favoring ...
- 271
54
votes
4
answers
10k
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Why do men have nipples?
I'd be tempted to call nipples in men vestigial, but that suggests they have no modern function. They do have a function, of course, but only in women. So why do men (and all male mammals) have them?
- 2,525
15
votes
1
answer
746
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How do members of cryptic species know who to mate with?
According to Wikipedia:
In biology, a cryptic species complex is a group of species which
satisfy the biological definition of species—that is, they are
reproductively isolated from each other—...
- 2,111