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Questions and Answers
What are the two types of molecules that govern inheritance?
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?
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?
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?
Why were the nature of the molecules governing inheritance discovered later?
What did Mendel term as the molecules that govern inheritance?
What did Mendel term as the molecules that govern inheritance?
What are the roles of DNA and RNA in inheritance?
What are the roles of DNA and RNA in inheritance?
Why is DNA considered the genetic material in most organisms?
Why is DNA considered the genetic material in most organisms?
In what organisms does RNA function as the genetic material?
In what organisms does RNA function as the genetic material?
What did Mendel term as 'factors' that transmit inheritance?
What did Mendel term as 'factors' that transmit inheritance?
Why did DNA evolve as the genetic material of almost all organisms?
Why did DNA evolve as the genetic material of almost all organisms?
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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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