NEET BIOLOGY

GENETICS AND EVOLUTION

INHERITANCE AND VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Evolution means that animals and plants change over
A
Hundreds of years
B
Thousands of years
C
Millions of years
D
Billions of years
Explanation: 

Detailed explanation-1: -evolution, theory in biology postulating that the various types of plants, animals, and other living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations.

Detailed explanation-2: -It takes a million generations or more to evolve lasting changes, the study found. Darwin was right: natural selection is beavering away all the time, and yet evolution itself plods along like a stick-in-the-mud.

Detailed explanation-3: -Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species.

Detailed explanation-4: -Evolution may be defined as any net directional change or any cumulative change in the characteristics of organisms or populations over many generations-in other words, descent with modification… It explicitly includes the origin as well as the spread of alleles, variants, trait values, or character states. (

Detailed explanation-5: -Animals and plants evolved from prokaryotes and have remained in close association with them. We suggest that early eukaryotic cells, formed by the fusion of two or more prokaryotes, already contained prokaryotic genetic information for aggregation and the formation of multicellular structures.

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