Tag Archives | DNA

Repeated Sequence of Chromosomal DNA | Genetics

In this article we will discuss about the repeated sequence of chromosomal DNA. Eukaryotic genomes contain large amount of repetitive sequences, sometimes present in hundreds or thousands of copies per genome. The understanding of repetitive sequences is based on studies conducted on denaturation (separation of DNA double helix into its two component strands) and renaturation (re-association of the single strands [...]

By |2016-12-12T07:24:35+00:00December 12, 2016|DNA|Comments Off on Repeated Sequence of Chromosomal DNA | Genetics

Chargaff-Equivalence Rule for DNA | Biochemistry

In this article we will discuss about the Chargaff-equivalence rule for DNA. By 1948, a chemist Erwin Chargaff started using paper chromatography to analyse the base composition of DNA from a number of studies. In 1950, Chargaff discovered that in the DNA of different types of organisms the total amount of purines is equal to the total amount of pyrimidines [...]

By |2016-11-28T11:04:44+00:00November 28, 2016|DNA|Comments Off on Chargaff-Equivalence Rule for DNA | Biochemistry

Components of DNA | Biochemistry

The following components of deoxyribonucleotide (DNA) have been described: 1. A Five Carbon Ring 2. Nitrogenous Base 3. A Phosphate Group. 1. A Five Carbon Ring: Deoxyribose is a pentose sugar consisting of five carbon atoms. The first and fourth carbon atoms of this sugar combine with one oxygen atom and form a ring. The fifth atom (5') forms –CH2 [...]

By |2016-11-28T11:04:44+00:00November 28, 2016|DNA|Comments Off on Components of DNA | Biochemistry
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