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TLS Online TPP Program

#Question id: 12496

A woman who has two brothers and a maternal uncle (her mother's brother) with non-specific X-linked mental retardation is referred for genetic counselling. There are no diagnostic tests available to help determine whether or not she is a carrier. Which of the following is correct?

#Part-A Aptitude & General Biotechnology
  1. The prior probability that she is a carrier is 1 in 4.
  2. The woman already has two unaffected sons. Therefore, the probability that she is a carrier can be calculated using Bayes' theorem to be 1 in 5.
  3. This means that the probability that her next son will be affected or that her next daughter will be a carrier is 1 in 5.
  4. The probability that the maternal grandmother of this woman is a carrier is 1 in 2.
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TLS Online TPP Program

#Question id: 19169

#Part-A Aptitude & General Biotechnology

Which of the following is not a highly specific biological interaction to be used in affinity chromatography?
TLS Online TPP Program

#Question id: 22898

#Part-B Specialized Branches in Biotechnology

The PCR technique was developed by 
TLS Online TPP Program

#Question id: 10273

#Part-B Specialized Branches in Biotechnology

The existence of different pathways that serve a similar function and can replace each other without a clear loss in function is called,
TLS Online TPP Program

#Question id: 818

#Part-A Aptitude & General Biotechnology

Which one of the following weak interactions have central features of protein structures, but makes only minor contributions to protein stability?
TLS Online TPP Program

#Question id: 419

#Part-A Aptitude & General Biotechnology

Biological oxidation-reduction reactions never involve: