TLS Online TPP Program

#Question id: 12487


Neurofibromatosis type 1 is one of the most common autosomal dominant disorders. A woman with neurofibromatosis type 1 has an unaffected partner. Which of the following is correct regarding their children?

#Unit 8. Inheritance Biology
  1. The probability that each of their children will be affected is 1 in 4.
  2. The probability that their second child will be affected if their first child is affected is 1 in 4.
  3. The probability that their third child will be affected if their first two children are affected is 1 in 2.
  4. If their first child is affected then their second child will not be affected.
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TLS Online TPP Program

#Question id: 9200

#Unit 9. Diversity of Life Forms

During the inventory of bacterial genes present in the Sargasso Sea, a deep isolated area in the middle of the Atlantic Ocean, a research team concluded that at least 1,800 bacterial species were present. Based on what you might predict about the habitat structure of such an area, what kind of bacterial diversity would you expect to see in tropical coral reef waters?

TLS Online TPP Program

#Question id: 33337

#Unit 2. Cellular Organization

Which of the following protein forms a spiral structure on the inner surface of the cytoplasmic membrane and oscillates back and forth from pole to pole? 

TLS Online TPP Program

#Question id: 3398

#Unit 11. Evolution and Behavior

Genetic drift in a small population for multiple generations can significantly affect the composition of a population’s gene pool. Following some observation are given for reason of Genetic drift?

A) Small populations are threatened by a loss of genetic variability. This loss may be caused by inbreeding, genetic drift, and limited mating.

B) Sampling error can arise is through the founder effect, which is due to the limited matting within population

C) Genetic drift arises is through a genetic bottleneck, which develops when a population undergoes a drastic reduction in population size.

D) Variance in allele frequency due to genetic drift will be maximal when one allele is very rare and the population size is small.

Which of the above observation are true?

TLS Online TPP Program

#Question id: 19093

#Unit 6. System Physiology – Plant

Necrotrophs leads to___
a) Inhibiting pathogen growth
b) Apoptosis
c) ROS generation
d) Narrow host range

TLS Online TPP Program

#Question id: 1355

#Unit 4. Cell Communication and Cell Signaling

To which category of proteins listed below are NCAM and VCAM most closely related?