Practice Questions

TLS Online TPP Program

#Question id: 24459

The correct sequence of events involved in phototransduction in rods and cones in response to light is:

#Unit 7. System Physiology – Animal

activation of transducin, decreased release of glutamate, structural changes in rhodopsin, closure of Na + channels, and decrease in intracellular cGMP.
decreased release of glutamate, activation of transducin, closure of Na + channels, decrease in intracellular cGMP, and structural changes in rhodopsin.
structural changes in rhodopsin, decrease in intracellular cGMP, decreased release of glutamate, closure of Na + channels, and activation of transducin.
structural changes in rhodopsin, activation of transducin, decrease in intracellular cGMP, closure of Na + channels, and decreased release of glutamate.

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TLS Online TPP Program

#Question id: 5359

#Unit 8. Inheritance Biology

Which of the following mode of inheritance and selected individuals must be carrier showing in above pedigree?

TLS Online TPP Program

#Question id: 5360

#Unit 1. Structure and Function of Biomolecules

Following some different genetic disorder traces in families.

Family	Father	Mother	Son	Daughter
A	Affected	Affected	Unaffected	Unaffected
B	Affected	Affected	Unaffected	Affected
C	Unaffected	Unaffected	Undetermined	Affected
D	Affected	Unaffected	Unaffected	Affected

Which of the following possible mode of inheritance in the Family A, B, C and D respectively

TLS Online TPP Program

#Question id: 5360

#Unit 8. Inheritance Biology

Following some different genetic disorder traces in families.

Family	Father	Mother	Son	Daughter
A	Affected	Affected	Unaffected	Unaffected
B	Affected	Affected	Unaffected	Affected
C	Unaffected	Unaffected	Undetermined	Affected
D	Affected	Unaffected	Unaffected	Affected

Which of the following possible mode of inheritance in the Family A, B, C and D respectively

TLS Online TPP Program

#Question id: 5361

#Unit 8. Inheritance Biology

The pedigree shows the inheritance of a RFLP marker through three generations in a single family. A total of 8 alleles (numbered to the left of the blots) are present in the family. The RFLPs of each member of the family are placed directly below his (squares) or her (circles) symbol and RFLP numbers. In Above pedigree, which of the following are not children of second generation parent?

TLS Online TPP Program

#Question id: 5362

#Unit 8. Inheritance Biology

From the following select the possible mode of inheritance and the probability that the daughter in generation III will show the trait.

TLS Online TPP Program

#Question id: 5363

#Unit 8. Inheritance Biology

A Southern blot using a probe that binds to the region spanning the mutation causing albinism detects one DNA fragment in homozygous normal individuals (A/A) and two fragments in albino individuals (a/a). Following banding pattern of three offspring of parents? Which of the following correct regarding parents?