** The notion where one type of organism can descend from another type dates back to the Pre-Socratic era. This idea carried itself into the Roman era and was evident in some of the scientific works from that period, such …
“DNA fingerprinting is a technique that shows the genetic makeup of living things. It is a method of finding the difference between the satellite DNA regions in the genome.” What is DNA Fingerprinting? Satellite DNA regions are stretches of repetitive …
Genomics Genomics is the study of a person’s genes, and its interaction with each other and the environment. It involves a combination of recombinant DNA, DNA sequencing methods, and bioinformatics to sequence, assemble, and analyse the structure and function of …
“Gene regulation can be defined as any kind of alteration in the gene to give rise to a different expression which might result in a change in the synthesized amino acid sequence.” Gene expression is basically the synthesis of the …
Genes A gene is a part of DNA that codes for a particular protein. DNA is the information database of the cell and exists within the cell nucleus. It carries all the important genetic instructions that produce proteins required by our …
The central dogma describes how the DNA makes its own copies by DNA replication, then codes for the RNA by means of a transcription and RNA codes for the proteins by translation. For the creation of a new generation, the …
The discovery of DNA was one of the most significant findings in the field of science. Today, deeper insight into the DNA structure has unravelled answers to questions that have been around for eons. The Central dogma explains how the …
Is it always DNA to RNA to proteins? The central dogma of molecular biology. Coined by Francis Crick. And in his own words, “I called this idea the central dogma, for two reasons, I suspect. I had already used the obvious …
The only way to make new cells is by the division of pre-existing cells. This means that all organisms depend on cell division for their continued existence. DNA, as you know, carries the genetic information that each cell needs. Each …
DNA packaging is an important process in living cells. Without it, a cell is not able to accommodate the large amount of DNA that is stored inside. Learning Objectives Describe how DNA is packaged differently in prokaryotes and eukaryotes Key …
The Double Helix DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are composed of two different classes of nitrogen-containing bases: the purines and pyrimidines. The most commonly occurring purines in DNA are adenine and guanine: Figure 1.2.1: Purines The most commonly occurring pyrimidines in DNA are cytosine and thymine: Figure 1.2.2: Pyramidines …
Even though researchers discovered that the factor responsible for the inheritance of traits comes from within the organisms; they failed to identify the hereditary material. The chromosomal components were isolated but the material which is responsible for inheritance remained unanswered. …
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