It is thought that gene duplications are generated by an error in what process?

 Which diagram accurately represents the directionality of DNA strands at one side of a replication fork?

Which of the following describes the lac operon in E. coli when lactose, but not glucose, is present in the culture medium?

There is very little conserved synteny between human and mouse genes.

In mammals, females have two X chromosomes and males have a single X chromosome in addition to a Y chromosome. Thus, females have a ‘double dose’ of all the genes on the X chromosome. Females address this imbalance by inactivating one of the two X chromosomes in every cell. How do the cells do this?

Round  \(12.345678\)  to the nearest hundredth.   You do not need to submit work for this problem.

Evaluate  \(3+2(x-1)\)  when  \(x=2\).

Order the following pair of numbers using  \(,\text{ or }=\).   \(-|-2|\)  \(|-2|\)

Use the distributive property and combine like terms to simplify   \(7(3x+2)-4(5x-3)\)   Use the equation editor to enter your answer (click on the \(\sqrt{x}\) to open the equation editor).

Divide:   \(\dfrac{9}{20}\div\dfrac{3}{5}\)   Give your answer as a reduced fraction, an improper fraction may be necessary.   Use the equation editor to enter your answer (click on the \(\sqrt{x}\) button to open the equation editor).