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 this article we will discuss about the stratification of typical forest and lentic water. Stratification of a Typical Forest: A forest community is a typical example of terrestrial stratification because here a number of strata both above and below the soil can be recognised. A forest bears an over story stratum. This stratum is composed of trees which are [...]
In this article we will discuss about the meaning and types of colouration in animals. Meaning of Colouration in Animals: All living organisms are adapted to survive in the particular environments they inhabit. For living suitably in a particular environment, living organisms exhibit numerous adaptations. Most of the adaptive features encountered in nature are protective in a variety of ways. [...]