The discovery of the structure of double-stranded DNA led to the 1962 Nobel Prize in Physiology and Medicine for James Watson, Francis Crick, and Maurice Wilkins. However, DNA can also form a quadruplex structure with guanidines, which is believed to assist in regulating gene transcription. In the quaduplex shown below, what interaction stabilizes the quadruplex structure?

Most of the human mitochondrial genome consists of genes except for a noncoding region called the ________________.

If a gene has several duplicates in a genome, each producing the same polypeptide, they must each have:

Which principle or rule restricts from having more than two electrons in a single orbital?

Which of the following resonance structures is the most stable:

More highly repetitive DNA is found in heterochromatin than in euchromatin. 

Which of the following is not a telomeric function?

___________________ are inherited blood disorders resulting from abnormal hemoglobin that comes from a mutation that reduces or prevents synthesis of either α- or β-globin genes.

Genes that are expressed only in specific cell types are known as:

Which molecule is expected to have the greatest dipole moment?