Name the membrane-bound organelle that contains the genomic DNA in a human cell.
The diagram below shows a section of a single strand of DNA.

Identify the components labeled X, Y, and Z choosing from the following terms:
Two polynucleotide strands coil around a common axis to form the characteristic structure of a DNA molecule. State the two-word scientific term used to describe this specific shape.
If a continuous segment of a single DNA strand contains exactly 18 nitrogenous bases, what is the maximum number of amino acids that this sequence could code for during translation? Select one option from the list below.
Suggest two distinct scientific, medical, or historical benefits of successfully sequencing and mapping the entire human genome.