Class XII · Biology practice

Molecular Basis of Inheritance MCQs

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668 questions in this collection · Page 35 of 67

Question 341 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The z gene codes for _______
The z gene codes for beta-galactosidase.
Question 342 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The y gene codes for _______
The y gene codes for permease.
Question 343 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The a gene codes for _______
The a gene codes for transacetylase.
Question 344 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

Lactose is the substrate for the enzyme beta-galactosidase and it regulates switching on and off of the operon. Hence, it is termed as _______
Lactose acts as the inducer.
Question 345 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The repressor of the operon is synthesized from the _______ gene.
The i gene produces the repressor.
Question 346 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The repressor binds to the _______ region of the operon and prevents RNA polymerase from transcribing.
The repressor binds to the operator region.
Question 347 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

Regulation of lac operon by repressor is referred to as _______ regulation.
It is negative regulation because the repressor turns it off.
Question 348 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The Human Genome Project was a 13-year project coordinated by the U.S. Department of _______ and the National Institutes of Health.
US Dept of Energy and NIH coordinated the HGP.
Question 349 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The method of identifying all genes that are expressed as RNA is referred to as _______
ESTs focus on expressed genes.
Question 350 of 668
📘 CLASS XII

Molecular Basis Of Inheritance

The blind approach of simply sequencing the whole set of genome is called _______
Sequencing the whole genome is Sequence Annotation.
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