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13 Apr 2018, 07:32
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Charles Darwin's theory of evolution by natural selection, one of the foundational concepts of modern biology, is often summed up by the phrase, "survival of the fittest." Many people interpret this phrase to mean that evolution always favors the organism that is best suited to survive in its environment, but this narrow interpretation is actually insufficient to explain many phenomena observed in nature.
Which of the following, if documented in a scientifically valid way, is most likely to be an example of the phenomena mentioned above?
A. Studies have shown that a type of male flycatcher (a bird) with an extra-long tail is more desirable to females as a mate than flycatchers with shorter tails, even though the longer tail hinders the bird's flying ability and makes it more vulnerable to predation.
B. It has been documented among whales, birds, and terrestrial mammals that colder temperatures encourage the development of larger animals, because larger animals have a lower surface-to-volume ratio and are therefore better able to conserve heat.
C. Farm animals bred by humans are generally larger, slower, and less intelligent than their wild ancestors.
D. A type of moth near London was observed to change from a population consisting mostly of light-colored moths to a population of mostly dark-colored moths over a period of 50 years as a response to darkening of rocks and trees in the area due to soot and smoke from London factories.
E. Male lions fight for control of prides, and thereby the capacity to reproduce, even though these fights can end in the death or maiming of the loser.
Which of the following, if documented in a scientifically valid way, is most likely to be an example of the phenomena mentioned above?
A. Studies have shown that a type of male flycatcher (a bird) with an extra-long tail is more desirable to females as a mate than flycatchers with shorter tails, even though the longer tail hinders the bird's flying ability and makes it more vulnerable to predation.
B. It has been documented among whales, birds, and terrestrial mammals that colder temperatures encourage the development of larger animals, because larger animals have a lower surface-to-volume ratio and are therefore better able to conserve heat.
C. Farm animals bred by humans are generally larger, slower, and less intelligent than their wild ancestors.
D. A type of moth near London was observed to change from a population consisting mostly of light-colored moths to a population of mostly dark-colored moths over a period of 50 years as a response to darkening of rocks and trees in the area due to soot and smoke from London factories.
E. Male lions fight for control of prides, and thereby the capacity to reproduce, even though these fights can end in the death or maiming of the loser.
AdityaHongunti
Posts: 552
03 Dec 2018, 04:42
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Charles Darwin's theory of evolution by natural selection, one of the foundational concepts of modern biology, is often summed up by the phrase, "survival of the fittest." Many people interpret this phrase to mean that evolution always favors the organism that is best suited to survive in its environment, but this narrow interpretation is actually insufficient to explain many phenomena observed in nature.
Understand:
- evolution theory suggests that the evolution favours those that are well suited/adapted to the challenges right now or the ones expected in future.
- author's point: but there are certain phenomenons where the theory doesn't really explain the evolution. An evolution which actually had nothing to do with survival per se. But due to some other reason.
Which of the following, if documented in a scientifically valid way, is most likely to be an example of the phenomena mentioned above?
- we have to find such a situation in which the evolution was not because of adaptability or survival but because of certain other reason.
A. Studies have shown that a type of male flycatcher (a bird) with an extra-long tail is more desirable to females as a mate than flycatchers with shorter tails, even though the longer tail hinders the bird's flying ability and makes it more vulnerable to predation.
- this option tells us that females selected a mate that had certain traits compared to others... Now this actually exemplifies the survival or fitness aspect. If the females are actually selecting the supposedly weaker ones (in certain aspects) then the mates might actually be genetically stronger !! This is in line with evolution theory.
B. It has been documented among whales, birds, and terrestrial mammals that colder temperatures encourage the development of larger animals, because larger animals have a lower surface-to-volume ratio and are therefore better able to conserve heat.
- evolution theory
C. Farm animals bred by humans are generally larger, slower, and less intelligent than their wild ancestors.
- no relevance
D. A type of moth near London was observed to change from a population consisting mostly of light-colored moths to a population of mostly dark-colored moths over a period of 50 years as a response to darkening of rocks and trees in the area due to soot and smoke from London factories.
-this option tells us that there was A change not due to survival instincts but due to changes that the organisms had gone through because of an external source ,which had nothing to do with survival...
E. Male lions fight for control of prides, and thereby the capacity to reproduce, even though these fights can end in the death or maiming of the loser.
- evolution theory
[size=80][b][i]Posted from my mobile device[/i][/b][/size]
Understand:
- evolution theory suggests that the evolution favours those that are well suited/adapted to the challenges right now or the ones expected in future.
- author's point: but there are certain phenomenons where the theory doesn't really explain the evolution. An evolution which actually had nothing to do with survival per se. But due to some other reason.
Which of the following, if documented in a scientifically valid way, is most likely to be an example of the phenomena mentioned above?
- we have to find such a situation in which the evolution was not because of adaptability or survival but because of certain other reason.
A. Studies have shown that a type of male flycatcher (a bird) with an extra-long tail is more desirable to females as a mate than flycatchers with shorter tails, even though the longer tail hinders the bird's flying ability and makes it more vulnerable to predation.
- this option tells us that females selected a mate that had certain traits compared to others... Now this actually exemplifies the survival or fitness aspect. If the females are actually selecting the supposedly weaker ones (in certain aspects) then the mates might actually be genetically stronger !! This is in line with evolution theory.
B. It has been documented among whales, birds, and terrestrial mammals that colder temperatures encourage the development of larger animals, because larger animals have a lower surface-to-volume ratio and are therefore better able to conserve heat.
- evolution theory
C. Farm animals bred by humans are generally larger, slower, and less intelligent than their wild ancestors.
- no relevance
D. A type of moth near London was observed to change from a population consisting mostly of light-colored moths to a population of mostly dark-colored moths over a period of 50 years as a response to darkening of rocks and trees in the area due to soot and smoke from London factories.
-this option tells us that there was A change not due to survival instincts but due to changes that the organisms had gone through because of an external source ,which had nothing to do with survival...
E. Male lions fight for control of prides, and thereby the capacity to reproduce, even though these fights can end in the death or maiming of the loser.
- evolution theory
[size=80][b][i]Posted from my mobile device[/i][/b][/size]
General Discussion
28 Apr 2018, 05:08
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As per argument organism survives with changing environment conditions but something is still unexplainable
No other choice than D correctly reflects that
Moth survive but it's change in color is somewhat puzzling
Posted from my mobile device
No other choice than D correctly reflects that
Moth survive but it's change in color is somewhat puzzling
Posted from my mobile device
