TLS Online TPP Program

#Question id: 1092


Which of the following statements is true of steroid receptors?

#Unit 4. Cell Communication and Cell Signaling
  1. The receptor molecules are themselves lipids or glycolipids.

  2. The receptor may be inside the nucleus of a target cell.

  3. The unbound steroid receptors are quickly recycled by lysosomes.

  4. Steroid receptors are typically bound to the external surface of the nuclear membrane.

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TLS Online TPP Program

#Question id: 3282

#Unit 11. Evolution and Behavior

Natural selection results in different forms of plants which can survive in contaminated or uncontaminated soil. Type of natural selection is

TLS Online TPP Program

#Question id: 3284

#Unit 11. Evolution and Behavior

The fitness of three genotype are A1A1 < A1A2 = A2A2) Which of the following observation correct?

TLS Online TPP Program

#Question id: 3285

#Unit 11. Evolution and Behavior

Natural selection continually operates on each species to keep up with improvements made by competing species; each species’ environment deteriorates as its competitors evolve new adaptations. This is known as

TLS Online TPP Program

#Question id: 3286

#Unit 11. Evolution and Behavior

 In a human population, the gene frequencies of the alleles for the ABO system are as follows:

A = 29%                         B = 7%                                    0=64%

Assuming complete random mating and Hardy-Weinberg equilibrium,

What are the blood type A frequencies in this population?

TLS Online TPP Program

#Question id: 3287

#Unit 11. Evolution and Behavior

Which statement is not an assumption of the Hardy–Weinberg law?

a. The allelic frequencies (p and q) are equal.

b. The population is randomly mating.

c. The population is large.

d. Locus is di-allelic

TLS Online TPP Program

#Question id: 3291

#Unit 11. Evolution and Behavior

Which of the following is the most predictable outcome of increased gene flow between two populations?