A linear segment of DNA was cut with the restriction enzyme EcoRI. The researcher knew that the segment contained two sites that the enzyme could recognize. How many segments will be present after the DNA has been exposed to the enzyme?

Sickle-cell disease is caused by a _______

The enzyme helicase unwinds the DNA double helix before DNA replication is initiated.

A diploid organism has two alleles for each gene.

If the ability to roll your tongue (R) is dominant over the inability to roll your tongue (r), what would be the genotype of a woman who can roll her tongue?

Which of the following mutations in a gene is/are likely to be the most problematic?

Hemophilia is an example of an x-linked trait in humans.

Eukaryotic cells process messenger RNAs before they leave the nucleus.

An anticodon is tool that viruses use to unlock the codons of its host cell.

Gene expression is a highly controlled process.