UNIT 5 L2 E1

What is the genetic material that contains information for an organism's inherited characteristics?

• Protein

• Chromosome

• DNA

• Histone

What is the structure formed by the wrapping of DNA around proteins called histone during interphase?

• Chromatid

• Telomere

• Chromatin

• Centromere

What is the region of the condensed chromosome where sister chromatids are held together?

• Centromere

• Telomere

• Chromatin

• Gene

What is the term for the two identical halves of a duplicated chromosome?

• Chromatin

• Chromatid

• Centromere

• Sister chromatids

What is the structure that looks pinched and holds sister chromatids together?

• Centromere

• Chromatid

• Telomere

• Chromatin

What does this model tell you about DNA? Select all correct answers.

• DNA is a double-stranded spiral, or helix.

• The nucleotide subunits of DNA follow a pattern in the way they pair.

• DNA is contained in the nucleus of prokaryotes.

• DNA is contained in the nucleus of eukaryotes.

• Eukaryotes have DNA, but prokaryotes do not.

According to this model, what is the role of histones? Select all correct answers.

• DNA wraps around histones to form chromatin.

• Interactions between histones help DNA coil.

• Histones form the DNA molecule into a helix shape.

• Once the DNA is tightly coiled, the histones dissolve.