Practice Questions

TLS Online TPP Program

#Question id: 7291

Five different genes are known to specify floral organ identity in Arabidopsis: APETALA1 (AP1), APETALA2 (AP2), APETALA3 (AP3), PISTILLATA (PI), and AGAMOUS (AG).

Which one of the following statement is incorrect?

#Unit 5. Developmental Biology

plants with the ap2 mutation lack sepals and petals
Plants bearing ap3 or pi mutations produce sepals instead of petals, and carpels instead of stamens.
plants homozygous for the ag mutation lack both stamens and carpels.
Plants bearing ap3 or pi mutations produce petals instead of sepals, and stamens instead of carpels.

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TLS Online TPP Program

#Question id: 15460

#Unit 2. Cellular Organization

During which phase of growth are bacteria most susceptible to antibiotics?

TLS Online TPP Program

#Question id: 746

#Unit 1. Molecules and their Interaction Relevant to Biology

Two separate chains of DNA are wound around each other, each following a helical (coiling) path, resulting in:

TLS Online TPP Program

#Question id: 5715

#Unit 8. Inheritance Biology

Following some abnormality is due to Gene rearrangement on chromosome.

A, Affecting the expression of gene

B. Disrupt the function of gene

C. Reduced recombination between gene present in inverted region

D. Cross over suppressor

Which of the following above abnormality is may be associated with inversion?

TLS Online TPP Program

#Question id: 19922

#Unit 12. Applied Biology

The barnase gene was placed under the control of infection-specific promoter prp 1-1 and was transferred into potato. Transgenic potatoes showed effective control of

TLS Online TPP Program

#Question id: 4134

#Unit 3. Fundamental Processes

The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):