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TLS Online TPP Program

#Question id: 3296

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of

#Unit 10. Ecological Principles

  1. convergent evolution

  2. similarity due to shared ancestry

  3. homology

  4. Divergent evolution

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TLS Online TPP Program

#Question id: 23364

#General Aptitude

Sometimes it has been witnessed that in a large class, students are trying to ditch their teacher in disciplinarian art. In your opinion the problem lies with
TLS Online TPP Program

#Question id: 15849

#Unit 4. Cell Communication and Cell Signaling

Host-pathogen interactions are an ongoing arms race; pathogens evolve to express unique structures that avoid host detection, and the host germline-encoded recognition system co-evolves to match these new challenges. However, because pathogens generally have much shorter life cycles than their vertebrate hosts, and some utilize error-prone DNA polymerases to replicate their genomes, pathogens can evolve rapidly to evade host encoded recognition systems. Which error prone DNA polymerase is used  by human?
TLS Online TPP Program

#Question id: 12755

#Unit 10. Ecological Principles

Which of the following statements best describes why biologists are currently concerned with global warming and the thawing of permafrost in many areas of the tundra biome?
TLS Online TPP Program

#Question id: 520

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzymes that catalyze the same reaction are called ________.
TLS Online TPP Program

#Question id: 7272

#Unit 5. Developmental Biology

Few statements regarding the role of disheveled (dsh) and beta-catenin in the development of sea urchin.

A. beta-catenin accumulates predominantly in the macromeres and somewhat in veg2 tier cells.

B. At the fourth cleavage disheveled and β-catenin, both of which are found in the cytoplasm and are inherited by the micromeres.

C. Treating sea urchin embryos with lithium chloride allows β-catenin to accumulate in every cell and transforms presumptive ectoderm into endoderm.

D. When β-catenin is prevented from entering the nuclei (i.e., it remains in the cytoplasm), the vegetal cell fates are specified, and the entire embryo develops as a ciliated ectodermal ball.

Which one of the following options represents a combination of correct statement?