Which of these conditions are always true of populations evolving due to natural selection? Condition 1: The population must vary in traits that are heritable.

Condition 2: Some heritable traits must increase reproductive success.

Condition 3: Individuals pass on most traits that they acquire during their lifetime.

TLS Online TPP Program

#Question id: 15526

#Unit 4. Cell Communication and Cell Signaling

If a thymocyte randomly generated a TCR with an affinity for MHC Class I, the TCR and CD8 would bind MHC Class I together, and generate a signal that specifically initiated a program that is 

a) silenced CD8 expression

b) silenced CD4 expression

c) induced expression of genes specific for helper T-cell lineage function

d) induced expression of genes specific for cytotoxic T-cell lineage function

TLS Online TPP Program

#Question id: 23327

#General Aptitude

The problem for the research related to metaphysics can be

TLS Online TPP Program

#Question id: 23311

#General Aptitude

Generally the teachers do not take pains on students’ postures in the classroom. What will you do for their improvement?

TLS Online TPP Program

#Question id: 656

#Unit 1. Molecules and their Interaction Relevant to Biology

The ________ is the single shape a protein adopts under physiological conditions.

TLS Online TPP Program

#Question id: 4946

#Unit 11. Evolution and Behavior

Although absolute distinctions between the ʺmost evolvedʺ protobiont and the first living cell are unclear, biologists generally agree that one major difference is that the typical protobiont could not