Data, collected from DNAs of a great many different species, led Chargaff to the following conclusions:

A. The base composition of DNA generally varies from one species to another.

B. DNA specimens isolated from different tissues of the same species have the different base composition.

C. The base composition of DNA in a given species changes with an organism’s age, nutritional state, or changing environment.

D. In all cellular DNAs, the sum of the purine residues equals the sum of the pyrimidine residues.

Which of the above statements are INCORRECT regarding Chargaff’s rule?

TLS Online TPP Program

#Question id: 15411

#Unit 8. Inheritance Biology

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?

TLS Online TPP Program

#Question id: 23596

#Unit 1. Molecules and their Interaction Relevant to Biology

Pointing to Varman, Madhav said, “I am the only son of one of the sons of his father.” How is Varman related to Madhav?

TLS Online TPP Program

#Question id: 742

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Conformation	Phi	Psi	Omega
A. Alpha helix	I. -57	P. -47	X. 180
B. B sheet	II. -135	Q. +135	Y. 0
C. Polyproline I	III. -83	R. +158
D. Polyproline II	IV. -78	S. +149

TLS Online TPP Program

#Question id: 11481

#Unit 7. System Physiology – Animal

Which of the following sensory receptors is correctly paired with its category?

TLS Online TPP Program

#Question id: 11624

#Unit 8. Inheritance Biology

The effect of gene interaction is that one gene masks (hides) the effect of another gene at a different locus, a phenomenon known as