In cloning experiments on the frog xenopus laevis, nuclei were removed from intestinal cells of tadpoles and transplanted into zygotes whose nuclei had been removed. A small percent of these zygotes developed into normal frogs, suggesting that

TLS Online TPP Program

#Question id: 4315

#Unit 3. Fundamental Processes

A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. When she finds that the introduced strand separates into single-stranded RNAs, what other evidence of this single-stranded RNA piece's activity would she find?

TLS Online TPP Program

#Question id: 4316

#Unit 3. Fundamental Processes

Which of the following processes do normal proto-oncogenes typically exhibit?

TLS Online TPP Program

#Question id: 4317

#Unit 3. Fundamental Processes

Which of the following functions does the product of the p53 gene carry out?

TLS Online TPP Program

#Question id: 4318

#Unit 3. Fundamental Processes

Which of the following statements correctly describes a characteristic of tumor-suppressor gene?

TLS Online TPP Program

#Question id: 4319

#Unit 3. Fundamental Processes

Why are BRCA1 and BRCA2 considered to be tumor-suppressor genes?

TLS Online TPP Program

#Question id: 4320

#Unit 3. Fundamental Processes

Forms of the Ras protein found in tumors usually cause which of the following events to occur?