Chromosomal Mutations

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What is a chromosomal deletion?

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A chromosomal deletion is a mutation where a segment of a chromosome is removed.

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What is chromosomal duplication?

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Chromosomal duplication is a mutation where a segment of a chromosome is copied or doubled.

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What is chromosomal inversion?

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Chromosomal inversion is a mutation where a segment of a chromosome breaks off, flips, and reattaches in the reverse order.

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What is chromosomal translocation?

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Chromosomal translocation is a mutation where a segment of a chromosome breaks off and attaches to a non-homologous chromosome.

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What is nondisjunction?

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Nondisjunction is a mutation that occurs when entire chromosomes do not separate evenly during meiosis, leading to gametes with an abnormal number of chromosomes.

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What is the result of a deletion mutation?

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The result of a deletion mutation can lead to genetic disorders or developmental issues due to the loss of essential genes.

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What can cause chromosomal mutations?

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Chromosomal mutations can be caused by environmental factors, errors during DNA replication, or exposure to radiation.

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How does inversion affect gene expression?

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Inversion can disrupt gene function and regulation, potentially leading to abnormal gene expression.

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What is an example of a disorder caused by nondisjunction?

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An example of a disorder caused by nondisjunction is Down syndrome, which results from an extra copy of chromosome 21.

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What is the significance of studying chromosomal mutations?

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Studying chromosomal mutations is important for understanding genetic diseases, evolution, and the mechanisms of heredity.