Exam 8: Chromosome Mutations: Variation in Number and Arrangement

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What explanation is generally given for lethality of monosomic individuals?

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Assume that an organism has a diploid chromosome number of 14. There would be 28 chromosomes in a tetraploid.

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In what way might gene duplication play a role in evolution?

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Familial Down syndrome can be caused by a translocation between chromosomes 1 and 14.

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The condition that exists when an organism gains or loses one or more chromosomes but not a complete haploid set is known as ________.

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Assume that an organism has a haploid chromosome number of 7. There would be 14 chromosomes in a monoploid individual of that species.

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In general, inversion and translocation heterozygotes are as fertile as organisms whose chromosomes are in the standard arrangement.

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