Exam 11: DNA and Genes

Which of the following is true?

One level of DNA packing involves the DNA being wound around

When the wrong base is inserted during DNA replication,a(n)________ error occurs.

Borrelia burgdorferi has a genome of 0.5 million base pairs and little noncoding DNA.Borrelia burgdorferi is a ________.

The following figure illustrates DNA undergoing replication.The region indicated by the arrow in this image represents a

The genome of a prokaryote rarely contains ________ DNA sequences that do not undergo transcription.

How can a cell contain DNA molecules that are much longer than the cell?

During DNA replication,the enzyme ________ builds a new strand of DNA while using the old strand of DNA as a template.

If their food source changes from lactose to arabinose,bacteria turn off their genes for lactose enzymes and turn on their genes for arabinose enzymes.Why don't bacteria express the genes for both lactose and arabinose enzymes all the time?

During DNA replication,the template strands of the original DNA molecule are complementary both to each other and to one of the new strands.

All cells in an organism contain a full copy of that organism's DNA.Your ears do NOT produce digestive enzymes because

Which of the following is NOT a base found in DNA?

Is a species that lacks DNA repair mechanisms likely to have more or fewer variations between individuals than a species that possesses repair mechanisms?

The process of DNA replication is error free.

In the following diagram of the bead-on-a-string level of DNA packaging,DNA is indicated by the letter A.

DNA is tightly packed around protein spools known as ________.

Which of the following might lead to a genome copy number variant in which the individual has only one copy of a gene instead of the normal two copies?

________ DNA consists of stretches of nucleotides that separate genes.

A change in an organism's environment generally results in a change in ________,leading to the production of different types of proteins.

To convert genetic information into a phenotype,the process labeled with the letter D in this diagram of the process of gene flow in a cell requires ________.