Microbiology Archives - Page 43 of 121

Pyrimidines and Purines Nucleotides – Structure, Occurrence and Properties

• Published on May 30, 2024 • 9 min readby Editorial Team

Pyrimidines and Pyrimidine Nucleotides Structure of Pyrimidines and Pyrimidine Nucleotides Occurrence of Pyrimidines and Pyrimidine Nucleotides Properties of Pyrimidines and Pyrimidine Nucleotides Biosynthesis of Pyrimidine Pyrimidine Nucleotide Examples Cytosine Thymine Uracil Purines and Purine Nucleotides Structure of Purines and Purine Nucleotides Occurrence of Purines and Purine Nucleotides Properties of Purines and Purine Nucleotides Purine Nucleotides … Read more

DNA – Definition, Structure, Properties, Types, Functions

• Published on May 30, 2024 • 50 min readby Editorial Team

What is DNA? DNA is a polymer of deoxyribonucleotides stuck together (or simply deoxynucleotides). It is made up of deoxyadenylate (dAMP), deoxyguanylate (dGMP), deoxycytidylate (dCMP), and deoxythymidylate (dTMP) units (dTMP) (Some authors prefer to use TMP instead of deoxythymidylate because it is only found in DNA.) History of DNA The history of DNA begins with … Read more

Experiments on DNA – Watson and Crick, Griffith, Chargaff, Hershey and Chase, Avery, McCarty, and MacLeod

• Last Updated September 19, 2024 • 0 revisions • 16 min readby Editorial Team

Many individuals believe that in the 1950s, American biologist James Watson and English physicist Francis Crick discovered DNA. In actuality, this is not true. DNA was discovered by the Swiss chemist Friedrich Miescher in the late 1860s. Then, in the decades that followed Miescher’s discovery, other scientists, notably Phoebus Levene and Erwin Chargaff, conducted a … Read more

Hershey–Chase experiment On DNA

• Published on May 30, 2024 • 6 min readby Editorial Team

Hershey–Chase experiment Experiment DNA as Genetic Material Observation Conclusion Why is DNA Considered a Genetic Material? It was found that DNA was the most important part of most species’ genes. There were some important exceptions, such as viruses whose genes were made of RNA. But what makes DNA different from other molecules that can be … Read more

Nucleotides and Nucleosides – Definition, Structure, Function, Types

• Published on May 29, 2024 • 42 min readby Editorial Team

What is Nucleotide? Nucleotide Structure The structure of a nucleotide is simple, but the structure they can make when they come together is complicated. This molecule is made up of two strands that wrap around each other. Hydrogen bonds hold the structure together in the middle. Each nucleotide has a specific shape that makes this … Read more

DNA Recombination – Definition, Mechanisms, Types

• Last Updated November 22, 2025 • 6 revisions • 21 min readby Editorial Team

DNA recombination is the process in which the genetic material (DNA) is exchanged between two DNA molecules. It is the natural method for reshuffling of genes, and it is observed in most living organisms. It is the process where the DNA strand is broken and then repaired, and new combination of alleles is formed. It … Read more

Transposition – Definition, Types, Mechanism

• Published on May 29, 2024 • 16 min readby Editorial Team

What is Transposition? Transposition is the process of shifting genetic sequences from one site in a genome to another. Types and Mechanisms of Transposition 1. Replicative Transposition Replicative transposition of DNA transposons The DNA transposon strand transfer process is described in the following section. Step 1 Step 2 Step 3 Step 4 Step 5 Replicative … Read more

Characteristic of Genetic Code

• Published on May 28, 2024 • 7 min readby Editorial Team

Genetic code refers to the rules which the linear nucleotide sequence identifies what is the linear structure of the polypeptide. This means that they define what sequences of nucleotides in an mRNA transformed to the amino acid sequence in the polypeptide.

Phosphorus Cycle – Definition, Steps, Examples, Significance, and Human Impacts

• Published on May 28, 2024 • 11 min readby MN Editors

Do you think phosphorus is important? This depends on whether you want DNADNAtexttextend text”D,N, End cell membranes, text or bones within your body? It’s a good bet that the likelihood is that yes!

Ecological Succession – Definition, Types, Mechanism, Examples

• Published on May 28, 2024 • 22 min readby Editorial Team

What is Ecological Succession? Ecological Succession Definition Ecological succession is the systematic and predictable process by which species composition in an ecosystem changes over time, progressing from initial colonization to a mature and stable community. Characteristics of Ecological Succession Ecological succession is a fundamental concept in the realm of ecology, delineating the sequential transformation of … Read more