Download App

Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance2 Marks
Question

  1. Name the molecule 'M' that binds with the operator.
  2. Mention the consequences of such binding.
  3. What will prevent the binding of the molecule 'M' with the operator gene? Mention the event that follows.
✓

Answer

  1. M is the repressor.
  2. When the repressor binds to the operator, transcription of structural genes by RNA-polymerase is prevented.
  3.  
  1. An inducer can prevent the binding of repressor to operator.
  2. Consequently, the RNA-polymerase gets access to the promoter and transcription proceeds.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1.5 Marks Questions" from Molecular Basis of Inheritance→Molecular Basis of Inheritance — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

How is the presently occurring species extinction different from the earlier mass extinctions?
→
What do you understand by population density on which factor it dependent?
→
Explain the significance of biodiversity in modern time.
→
Write a short note on sperm. (With a labeled diagram.)###Draw a labelled diagram of sperm.
→
Explain the following in context of cancer:
Oncogens/ Carcinogens.
→
Primary productivity varies from ecosystem to ecosystem. Explain.
→
The life of offsprings of viviparous animals are not very much at risk. Justify statement giving two reasons.###There are more probability of survival of offsprings in viviparous organisms. Explain statement with reason.
→
How does the sperm penetrate through the zona pellucida in human ovum?
→
What is Gause’s competitive exclusion principle? Explain with an example.
→
Define aestivation.
→