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Question:
Origin of first toothed birds and dominance of gymnosperms took place during
Origin of first toothed birds and dominance of gymnosperms took place during
Updated On: Aug 15, 2022
- Triassic period
- Jurassic period
- Permian period
- Cretaceous period.
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The Correct Option is B
Solution and Explanation
Jurassic period is marked by the origin of toothed birds (first birds), dominance of dinosaurs, origin of flowering plants and dominance of gymnosperms.
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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.
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