How do mutations work in dna sequences? I'm so lost

Biology

1 answer:

liraira [26]2 years ago

6 0

Answer:

A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.

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How has gene duplication played a critical role in evolution? see concept 21.5 (page)

Angelina_Jolie [31]

Answer:

Explanation: Without gene duplication, mutation of genes would not exist. This would prevent organisms from adapting to their environment, making survival much more difficult if not impossible.

8 0

1 year ago

Some people argue that evolution, which is generally associated with progressive increases in the

yKpoI14uk [10]

This argument would not be valid because it fails to take into account the mechanisms through which evolution occurs and misunderstands the second law of thermodynamics.

The second law of thermodynamics states that the total entropy of a system must always increase. The argument stating that this law disproves evolution given that evolution can be considered as a decrease in entropy, fails to realize that the second law states that the total entropy must increase, this does not mean that entropy cannot decrease at one point, to then increase more so at another.

The other aspect of evolution that this argument fails to account for is that evolution is a chaotic process. Evolution, though having a final product that may be considered as increasing in organization, is at heart a chaotic process caused by random mutations and the fragile process of natural selection. Therefore, rather than disprove it, the second law of thermodynamics is actually the driving force behind continued evolution.

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