You were watching one of your favorite TV shows last night. On the show, one of the patients had a genetic disorder called SCID (Severe Combined Immunodeficiency Disease). The doctor wanted to treat her young patient by using HIV (Human
Immunodeficiency Virus). Is this just TV drama, or can viruses really be used to treat disease?
A)
This is pure fantasy! The HIV would only cause more problems than it
would fix
B)
This is real life! Patients can given a corrected copy of defective genes
using viral vectors derived from HIV.
C)
This is real life! Viral vectors derived from HIV can destroy defective genes
by infecting cells without causing disease.
D)
This is pure fantasy! Viral DNA is different than the DNA found in living
organisms and thus, cannot be used to correct gene defects.

What type of genetic drift would be simulated if all the beans that were not selected died out?

If a checkpoint detects damaged dna, the checkpoint may

Astudent from one of the research labs is having trouble preparing a slide for examination and photographing. the bacterial slide that he has brought to you was prepared using a commercially purchased stain. he has asked for your in determining what he is doing wrong so that he can change the lab protocols and continue on with his project. after examining the slide under oil immersion, you determine that no bacteria are present even though the student is able to show you the culture he used to make that slide that has visible growth in the liquid medium. which of the following statements does not explain the fact that there are no bacteria present on the student’s slide? by not allowing a glass slide to completely air dry before heat fixation, the flame will cause the surrounding water to boil and this will damage the bacterial cell. overheating during the fixation step boiled the water within the bacterial cells and resulted in the cells bursting. insufficient heating of the slide did not drive out the thin layer of water and this resulted in minimal bonding between the bacteria and the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide. rinsing with alcohol during the washing step stripped the bacteria off the glass slide.