AP BIOLOGY

EVOLUTION

MODERN THEORY OF EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The strongest evidence for change over a long period of time comes from:
A
DNA
B
fossils
C
embryo studies
D
direct observation of living species
Explanation: 

Detailed explanation-1: -Fossils provide evidence of long-term evolutionary changes, documenting the past existence of species that are now extinct.

Detailed explanation-2: -Perhaps the most persuasive fossil evidence for evolution is the consistency of the sequence of fossils from early to recent. Nowhere on Earth do we find, for example, mammals in Devonian (the age of fishes) strata, or human fossils coexisting with dinosaur remains.

Detailed explanation-3: -Fossils. Fossils document the existence of now-extinct past species that are related to present-day species. Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).

Detailed explanation-4: -Fossils provide important evidence for evolution and the adaptation of plants and animals to their environments. Fossil evidence provides a record of how creatures evolved and how this process can be represented by a ‘tree of life’, showing that all species are related to each other.

Detailed explanation-5: -Fossils are the preserved remains or traces of animals, plants, and other organisms from the past. Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today.

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