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TLS Online TPP Program

#Question id: 4949

What probably accounts for the switch to DNA-based genetic systems during the evolution of life on Earth?

#Unit 11. Evolution and Behavior

  1. DNA is chemically more stable and replicates with fewer errors (mutations) than RNA.

  2. Only DNA can replicate during cell division.

  3. RNA is too involved with translation of proteins and cannot provide multiple functions.

  4. DNA forms the rod-shaped chromosomes necessary for cell division.

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TLS Online TPP Program

#Question id: 5033

#Unit 11. Evolution and Behavior

Which of the following statements is correct in regard to Homo erectus?
TLS Online TPP Program

#Question id: 5763

#Unit 8. Inheritance Biology

A mutation that causes a mutant phenotype only under restrictive conditions
TLS Online TPP Program

#Question id: 7315

#Unit 5. Developmental Biology

Following pathway represents apoptosis in drosophila. Identify the proteins A-D sequentially.
TLS Online TPP Program

#Question id: 390

#Unit 1. Molecules and their Interaction Relevant to Biology

What are the properties arising due to varying concentrations of solute in a given solvent, irrespective of the nature of solute with respect to the solvent?
TLS Online TPP Program

#Question id: 7314

#Unit 5. Developmental Biology

With reference to plant flowering pattern; match the terms of Column I with the most appropriate term of Column II. (Se-Sepal; Ca-Carpel; St-stamen; Pe-Petal)

s.no.

Homeotic mutants

(Column 1)

S. No

Flower patterning

(Column 2)

A.     

Apetala2 mutant

                    I.  

Ca-Ca-Ca-Ca

B.      

Agamous /Apetala3 mutant

                    II.    

Se-Pe-Pe-Se

C.      

Agamous mutant

               III. 

Se-Se-Se-Se

D.     

Apetala2/Apetala3 mutant

                IV.

Ca-St-St-Ca