Practice Questions

TLS Online TPP Program

#Question id: 15287

Following are postulates of mechanism of differentiation. Which of the following is incorrect?

#Unit 5. Developmental Biology

Every somatic cell nucleus of an organism contains the complete genome established in the fertilized egg, it means the DNAs of all differentiated cells are identical.
The unused genes in differentiated cells are neither destroyed nor mutated; they retain the potential for being expressed.
Only used genes have the potential for being expressed while unused genes are either destroyed or mutated.
Only a small percentage of the genome is expressed in each cell, and a portion of the RNA synthesized in each cell is specific for that cell type

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TLS Online TPP Program

#Question id: 3380

#Unit 11. Evolution and Behavior

Human population having mutant allele to caused color blindness, following different phenotype frequency?

Phenotype

Male

Female

Normal

.70

.72 heterozygous

.49 homozygous

Colour blindness

.30

.09

Which of the following frequency of color blindness allele and color blind female in their population?

TLS Online TPP Program

#Question id: 21119

#Unit 12. Applied Biology

The electrochemical biosensors are categorised into _________________ types?

TLS Online TPP Program

#Question id: 30075

#Unit 2. Cellular Organization

The enzyme that catalyzes the transposition of an IS element is called __________

TLS Online TPP Program

#Question id: 20299

#Unit 7. System Physiology – Animal

One of the manifestation of Conn’s syndrome is:

TLS Online TPP Program

#Question id: 10832

#Unit 10. Ecological Principles

Which of the following is an example of a plant chemical defence?