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Assertion: Genes determine the characteristics of an individual.

Reason: Genes code for proteins that are responsible for the physical and biological traits of an individual.

Option: 1

 Both assertion and reason are true, and the reason is the correct explanation of the assertion.

Option: 2

 Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

Option: 3

Assertion is true, but the reason is false.


Option: 4

Assertion is false, but the reason is true.

Answers (1)


This assertion and reason type question highlights the role of genes in determining an individual's characteristics. Genes are segments of DNA that contain instructions for the synthesis of proteins, which are the building blocks of life. The reason provided explains that these proteins are responsible for a wide range of physical and biological traits, including eye color, hair texture, and susceptibility to diseases.

The process of gene expression is complex and involves several steps. First, the DNA sequence is transcribed into messenger RNA (mRNA), which carries the genetic information from the nucleus to the ribosomes in the cytoplasm. Next, the mRNA is translated into a specific sequence of amino acids, which fold and interact to form a functional protein.

The specific sequence of amino acids in a protein is determined by the sequence of nucleotides in the DNA. Different genes have different sequences, which result in the production of different proteins. Therefore, genes are responsible for the synthesis of proteins that give rise to different physical and biological traits in an individual.

It is important to note that gene expression can be regulated by a variety of factors, including environmental factors, epigenetic modifications, and genetic interactions. Therefore, while genes play a critical role in determining an individual's characteristics, they do not provide a complete explanation. Other factors, including environmental influences and complex interactions between genes, can also play a significant role in shaping an individual's traits and characteristics.

Option 1 is the correct answer.

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