If the malesʹ halteres have species-specific size, shape, color, and use in courtship displays, and if the speciesʹ ranges overlap, then the speciation events may have been driven, at least in part, by which of the following?

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#Question id: 3773

#XL - Q Biochemistry

DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed during DNA replication?

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#Question id: 3775

#XL - Q Biochemistry

What are telomeres?

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#Question id: 3777

#XL - Q Biochemistry

Which of the following types of cells are affected most by telomere shortening?

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#Question id: 3778

#XL - Q Biochemistry

Which of the following effects might be caused by reduced or very little active telomerase activity?

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#Question id: 3779

#XL - Q Biochemistry

In a healthy eukaryotic cell, the rate of DNA repair is typically equal to the rate of DNA mutation. When the rate of repair lags behind the rate of mutation, what is a possible fate of the cell?

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#Question id: 3780

#XL - Q Biochemistry

If a cell were unable to produce histone proteins, which of the following results would be a likely effect on the cell?