In this article we will discuss about:- 1. Exception of Linkage of Chromosomes 2. Operation of Linkage from Morgan's Data 3. Characteristics 4. Groups 5. Map. Contents: Exception of Linkage of Chromosomes Operation of Linkage from Morgan's Data Linkage—its Characteristics Linkage Groups Linkage Map 1. Exception of Linkage of Chromosomes: The seven pairs of characters in garden peas with which [...]
In this article we will discuss about:- 1. Meaning of Crossing Over 2. Double Cross-Over 3. Cytological Basis 4. Cytological Evidence 5. Somatic Crossover 6. Different Theories on the Mechanism 7. Theories that Explain the Happenings 8. Chiasma Formation—the Theories 9. No Cross-over in Drosophila Males 10. Experimental Conditions. Contents: Meaning of Crossing Over Double Cross-Over Cytological Basis of Crossing [...]
In eukaryotic organisms — plants, animals and fungi — the major portion of DNA is present in the chromosomes which are well-organised structures and quite different from the prokaryotic counterparts. Besides the chromosomes, mitochondria of both plants and animals and the chloroplasts of green plants also contain DNA. Interesting is the fact that the organization and the nature of the [...]