In this article we will discuss about:- 1. Meaning of Crossing-Over 2. Example of Crossing Over in Drosophila 3. Theories 4. Mechanism 5. Kinds 6. Percentage 7. Cytological Evidence 8. Factors 9. Cytological Evidence 10. Significance 11. Interference and Coincidence. Meaning of Crossing-Over: The phenomenon of complete linkage occurs rarely since the linked genes tend to separate during meiotic divisions. [...]
This article will update you about the difference between DNA and RNA. Difference # DNA: 1. DNA is the usual genetic material. 2. DNA is usually double stranded, except certain viruses where DNA is single stranded e.g., φ x 174) 3. The pentose sugar is deoxyribose. 4. The common organic bases are adenine, guanine, cytosine and thymine. 5. Regarding base [...]
In this article we will discuss about:- 1. Structure of Ribose Nucleic Acids 2. Types of RNA 3. Replication. Structure of Ribose Nucleic Acids: It is also a polynucleotide but the pentose ribose has a free hydroxyl group in position 2'. It is a long chain polynucleotide which exist in a regular conformation like a double-chain DNA although some viruses [...]