SCIENCE
ZOOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a homologus organs
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b vestigial organ
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c analogous organs
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None of the above
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Detailed explanation-1: -For example in the given question eyes of octopuses as well as mammals have the same function of vision which is why they can be said to have a convergent evolution. So, the eyes of octopuses and mammals are an example of convergent evolution.
Detailed explanation-2: -Confronted by this situation, evolutionists say that these organs are not homologous (that is, descended from a common ancestor) but rather analogous-similar, despite the absence of any evolutionary relationship.In their view, for instance, the human eye and the octopus eye are analogous organs. Q.
Detailed explanation-3: -Interestingly, through convergent evolution, squid and octopus have evolved an eye layout that is remarkably similar to our own. They also have large eyes, with a lens, iris, and single large interior chamber, as shown below, which provide them with excellent vision.
Detailed explanation-4: -Historically, anatomical and developmental differences among eyes of different species favored homoplasy; however, recent molecular data indicating that all eyes employ a similar cascade of transcription factors (proteins regulating gene expression) for development have suggested homology.
Detailed explanation-5: -The eye of octopus and eye of cat show different patterns of structure, yet they perform a similar function. This is an example of analogous organs that have evolved due to convergent evolution. Development of similar adaptive functional structures in unrelated groups of organisms is called convergent evolution.