If the experimental population of E. coli lacks an F factor or F plasmid, and if bacteriophage are excluded from the bacterial cultures, then which of these is a means by which beneficial mutations might be transmitted horizontally to other E. coli cells?

TLS Online TPP Program

#Question id: 11477

#Unit 7. System Physiology – Animal

How could you genetically modify an animal so that it would distinguish more shades of green?

TLS Online TPP Program

#Question id: 11195

#Unit 7. System Physiology – Animal

Action potentials move along axons ________.

TLS Online TPP Program

#Question id: 18810

#Unit 13. Methods in Biology

In flow cytometry, what is side scatter a measure of?

TLS Online TPP Program

#Question id: 1851

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a feature of a Salmonella-based vaccine expressing antigens from other infectious agents?

TLS Online TPP Program

#Question id: 15290

#Unit 5. Developmental Biology

Lens formation requires sequential events whereby the anterior neural plate signals the anterior ectoderm to promote secretion of Pax 6, which renders the anterior ectoderm more receptive to secretions from the optic vesicle. The above can be best explained by which of the following phenomenon?