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TLS Online TPP Program

#Question id: 1973

Clonal selection is an explanation for how

#Unit 4. Cell Communication and Cell Signaling

  1. a single type of stem cell can produce both red blood cells and white blood cells.

  2. V, J, and C gene segments are rearranged.

  3. an antigen can provoke production of high levels of specific antibodies.

  4. HIV can disrupt the immune system.

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TLS Online TPP Program

#Question id: 1411

#Unit 4. Cell Communication and Cell Signaling

A gain-of-function mutation in telomerase causes which of the following?
TLS Online TPP Program

#Question id: 11473

#Unit 7. System Physiology – Animal

Lateral inhibition via horizontal cells in the mammalian retina ________.
TLS Online TPP Program

#Question id: 29100

#Unit 8. Inheritance Biology

The adult flies that emerged had a eyeless mutation phenotype in Drosophila produces greatly reduced eyes.. When this eyeless fly was crossed to a known reduced eye  mutant fly, all the progeny had normal phenotype. The observed phenotype can be best explained as an example of__
TLS Online TPP Program

#Question id: 28729

#Unit 2. Cellular Organization

KDEL receptor and other membrane proteins that are transported Golgi to ER contain ___
TLS Online TPP Program

#Question id: 28539

#Unit 5. Developmental Biology

 A gene that lacks the intracellular kinase domain and depend on interaction with other intracellular proteins, is called as___