The first truly vertebrate phase of development is manifested by the formation of the

TLS Online TPP Program

#Question id: 13193

#Unit 1. Molecules and their Interaction Relevant to Biology

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: 8953

#Unit 9. Diversity of Life Forms

The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the

TLS Online TPP Program

#Question id: 1414

#Unit 4. Cell Communication and Cell Signaling

Which of the following genes encodes a caspase in C. elegans?

TLS Online TPP Program

#Question id: 10267

#Unit 8. Inheritance Biology

Exceptions of law of dominance are

a. Incomplete dominance

b. Codominance

c. Nondisjunction

d. Linkage

TLS Online TPP Program

#Question id: 12600

#Unit 10. Ecological Principles

Ecosystems are