CLASS XII – CHAPTER 6 (NOTES 6.1)
ORIGIN OF LIFE Looking at Stars: Stars observed at night are emitting light that started its journey millions of years ago, traveling trillions of kilometers. Observing stars is like peering…
CLASS XII – CHAPTER 5 (NOTES 5.10)
DNA Fingerprinting Genetic Uniformity: Nearly 99.9% of the human DNA sequence is identical. This raises the question of what makes each individual unique, considering the human genome is about 3…
CLASS XII – CHAPTER 5 (NOTES 5.9)
The Human Genome Project (HGP) The Human Genome Project (HGP) was indeed an ambitious and groundbreaking scientific endeavor. It aimed to sequence and map the entire human genome, providing a…
CLASS XII – CHAPTER 5 (NOTES 5.8)
Regulation of gene expression Regulation of gene expression is a crucial process that allows an organism to control when and to what extent specific genes are activated or repressed. Gene…
CLASS XII – CHAPTER 5 (NOTES 5.7)
TRANSLATION Translation is the process of converting the information encoded in the mRNA (messenger RNA) into a polypeptide chain, which ultimately forms a protein. This process involves several key steps,…
CLASS XII – CHAPTER 5 (NOTES 5.6)
Genetic Code The deciphering of the genetic code was indeed a monumental achievement in the field of biology. It allowed scientists to understand how the sequence of nucleotides in DNA…
CLASS XII – CHAPTER 5 (NOTES 5.4)
REPLICATION The proposal by James Watson and Francis Crick in 1953, which included the concept of DNA replication, was a pivotal moment in the understanding of genetics and molecular biology.…
CLASS XII – CHAPTER 5 (NOTES 5.5)
Transcription Transcription is the process of copying genetic information from one strand of DNA into RNA. It is a crucial step in the flow of genetic information from DNA to…
CLASS XII – CHAPTER 5 (NOTES 5.3)
RNA WORLD The "RNA world" hypothesis is a scientific theory that proposes a crucial stage in the evolution of life on Earth where RNA (ribonucleic acid) played a central role…
CLASS XII – CHAPTER 5 (NOTES 5.2)
Add Your Heading Text Here The search for genetic material is a fascinating journey in the history of genetics and molecular biology. It is the quest to identify the substance…
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