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CBSE Class 12 Molecular Basis of Inheritance Quiz

10 Questions

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CBSE Class 12 Molecular Basis of Inheritance Quiz

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Questions and Answers

What are the two types of molecules that govern inheritance?

Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA) (correct)

Proteins and Lipids

Enzymes and Hormones

Carbohydrates and Nucleotides

Why does DNA act as the genetic material in almost all organisms?

It is a simpler molecule compared to RNA

It is a more stable molecule compared to RNA (correct)

It is a more reactive molecule compared to RNA

It is a larger molecule compared to RNA

In which organisms does RNA act as the genetic material?

All plants

All bacteria

All animals

Some viruses (correct)

Why were the nature of the molecules governing inheritance discovered later?

With the development of various scientific techniques Signup and view all the answers

What did Mendel term as the molecules that govern inheritance?

Factors Signup and view all the answers

What are the roles of DNA and RNA in inheritance?

DNA acts as the genetic material in almost all organisms, while RNA acts as the messenger molecule. Signup and view all the answers

Why is DNA considered the genetic material in most organisms?

DNA is more stable compared to RNA, which makes it the more suitable molecule for long-term storage of genetic information. Signup and view all the answers

In what organisms does RNA function as the genetic material?

RNA functions as the genetic material in some viruses. Signup and view all the answers

What did Mendel term as 'factors' that transmit inheritance?

Mendel termed the molecules that transmit inheritance as 'factors'. Signup and view all the answers

Why did DNA evolve as the genetic material of almost all organisms?

DNA is a more stable molecule compared to RNA, making it better suited for long-term storage of genetic information. Signup and view all the answers

Study Notes

Molecular Basis of Inheritance

Inheritance is conveyed through specific molecules known as 'factors,' identified by Mendel.
These molecules are recognized as genes, primarily consisting of two types: Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA).
Except for viruses, DNA is the genetic material for all organisms, while RNA primarily serves as a messenger molecule.
In certain viruses, RNA can function as genetic material, highlighting its versatile role in inheritance.
DNA's stability surpasses that of RNA, making it the preferred form of genetic material in the majority of living organisms.
The transition from understanding inheritance as ‘factors’ to the discovery of genes was propelled by advancements in scientific techniques.

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Description

Test your knowledge of the molecular basis of inheritance in CBSE Class 12 with this quiz. Explore the concepts of genes, DNA, and RNA in the transmission of hereditary traits across organisms.