To Cells That Are Defective in Primer Removal, You Add

question 107

Multiple Choice

To cells that are defective in primer removal, you add fluorescent ribonucleotides when the cells are undergoing DNA replication. In this case, you observe that one strand glows more than the other not only near the replication fork but also at intervals along its length. Which strand glows in this way and why?

• A)The leading strand glows in this way because it is synthesized continuously.
• B)The leading strand glows in this way because its RNA primers are widely spaced.
• C)The lagging strand glows in this way because it is synthesized continuously.
• D)The lagging strand glows in this way because its RNA primers are closely spaced.

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Definitions:

Extinction

Refers to the permanent loss of a species. It is marked by the death or failure to breed of the last individual.

Stromatolites

Layered structures formed by the mineralization of bacteria.

Zircons

Minerals that are widely used in dating geological structures due to their ability to encapsulate and preserve uranium-lead isotopes over immense periods.

Fossilized

The process by which organic material is converted into a fossil, preserving the remains of organisms that lived in the past.