Mutations (Gene & Chromosomal)

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What is nondisjunction?

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Nondisjunction is the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during meiosis, leading to gametes with an abnormal number of chromosomes.

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What is a frameshift mutation?

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A frameshift mutation is a type of mutation that involves the insertion or deletion of a nucleotide in the DNA sequence, which alters the reading frame of the genetic code and can significantly affect the resulting protein.

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What is a point mutation?

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A point mutation is a mutation that changes a single base pair in the DNA sequence, usually involving a substitution of one base for another.

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What is translocation in genetics?

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Translocation is a type of chromosomal mutation where a segment of one chromosome breaks off and attaches to another chromosome.

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How can mutations be beneficial?

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Mutations can increase genetic diversity, which can enhance the survival and adaptability of individuals and species in changing environments.

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What is a chromosomal mutation?

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A chromosomal mutation is a change in the structure or number of chromosomes, which can lead to genetic disorders or variations.

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What is a silent mutation?

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A silent mutation is a type of mutation that does not change the amino acid sequence of a protein, often because of redundancy in the genetic code.

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What is polyploidy?

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Polyploidy is a condition in which an organism has more than two complete sets of chromosomes, which can lead to increased size and vigor in plants.

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What is a deletion mutation?

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A deletion mutation is a type of mutation where a segment of DNA is removed or lost, which can lead to loss of function in genes.

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What is an inversion mutation?

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An inversion mutation occurs when a segment of a chromosome is reversed end to end, which can disrupt gene function.