Understanding Mutations in DNA

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How do mutations affect an organism's DNA?

Mutations have no impact on an organism's DNA.

Mutations can cause changes in an organism's appearance, behavior, and physiology. (correct)

Mutations always improve an organism's DNA structure.

Mutations only affect an organism's appearance, not behavior.

What is the role of mutations in evolution?

Mutations always lead to the extinction of species.

Mutations are essential for evolution to occur. (correct)

Mutations have no impact on the process of evolution.

Mutations hinder the process of evolution.

What are alleles?

Different versions of the same genetic information created by mutations (correct)

Mutations that occur in a single generation

An organism's DNA unaffected by mutations

A term used to describe genetic clones

How do variations created by mutations help organisms?

Variations help organisms survive and reproduce. Signup and view all the answers

What happens to variations that hinder an organism's survival?

The organism dies and the variations are eliminated from the population. Signup and view all the answers

Why are mutations often considered essential despite being associated with errors?

Because they introduce variations that are crucial for evolution. Signup and view all the answers

What is natural selection?

A process where variations beneficial for survival and reproduction are passed on. Signup and view all the answers

What are somatic mutations?

Mutations that occur in non-reproductive cells Signup and view all the answers

Which type of mutation can lead to cancer?

Somatic mutations Signup and view all the answers

What is an example of a germ-line mutation?

Albinism Signup and view all the answers

What type of mutation affects short nucleotide sequences?

Gene-level mutations Signup and view all the answers

Which is an example of a chromosomal mutation?

Down syndrome Signup and view all the answers

What causes spontaneous mutations?

Chance Signup and view all the answers

What is a substitution mutation?

When one codon is switched with another codon Signup and view all the answers

Which is NOT a type of mutation mentioned in the text?

Duplication mutation Signup and view all the answers

Understanding Mutations in DNA

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