Explain with suitable example Importance of anatomical evidence in evolution
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Explain with example importance of anatomical evidence in evolution
Report by Chitrangath209 10.05.2018
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Q. 1 explain with example importance of anatomical evidence in evolution.
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===>>> Analogous structure:- Analogues structure are the various structure in different that have the some function. structure of appearance but do not share a common ancestor.
<> Example :- An example of an analogus structure would be a bat wing, a bird wing and an insect wing.
Analogous structure support the theory of evolution because it shows how different species have evolved similar adaptation. when in similar environment.
====>>> Vestigial structure :- Vestigial structures are structures that were once necessary for survival but over time that that function became either diminished or non-existent.
===>>> The first specifically anatomical investigation separate from a surgical or medical procedure is associated by early commentators with Alcmaeon of croton.
==>>This investigation will allow you to examine homologous, analogous, and vestigial structures, and how each type of
anatomical structure plays a valued role in the collection of evidence for evolutionary change amongst organisms.
====>>>> Homologous structure :- Homologous structure are structure in different species that are similar because of their common ancestry this support. evolution because it can prove that many different species all come from a common ancestor and evolved over time to become the species they are today.
<> Example :- An example of a homologous structure is the dolphins fin an
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scientists today, there are many ways to support the Theory of Evolution with evidence. DNA similarities between species, knowledge of developmental biology, and other evidence for microevolution is abundant. However, scientists haven't always had the capabilities to examine these types of evidence.
Answer:
Anatomical evidences help us to study how species have evolved over a period of time. Analogous structures support the theory of evolution and explain the fact that how species build up adaptations in order to fit in an environment whereas homologous structures help us to understand common ancestry. For example, if we compare the hands of humans with cat’s foreleg, flipper of whale and patagium of bat, we see that each of these organism use these structures are differently. But still there is a similarity between the structure of bones and joints which indicates that somewhere or the other these animals may have originated from common ancestors. This is an example of homology. Another example which explains analogous features is the arctic fox and the ptarmigan bird, Both of them change colours from dark brown to white during seasonal changes. They do not show common ancestry in way but since, they are found in the same habitat they are adapted to colour change.