Question:
Which of the following is a pair of homologous organs?
Which of the following is a pair of homologous organs?
Updated On: May 5, 2024
- pectoral fin of rohu and fore-limb of horse
- wings of grasshopper and wings of crow
- lungs of rabbit and gills of rohu
- wings of bat and wings of butterfly.
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The Correct Option is A
Solution and Explanation
Homologous structures have the same embryonic origin and basic structure, though they mayor may not perform the same function. Homologous structures shows that the animal which possess them have commonancestoryandshowevolutionbydivergencefrom the ancestral type. Vestigial organs are those which have ceased to be any use to their possessor but still persist generation after generation in a reduced form. They are retrogressive organs but were well developed and functional in the ancestors.
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Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.