Lecture notes on chromosome. After reading these notes you will learn about: 1. Introduction to Chromosome 2. Meaning of Chromosome 3. Number and Size 4. Structure and Morphology 5. Molecular Organization 6. Mechanism of Chromosome Condensation 7. Special Types 8. Karyotype Concept 9. Heterochromatin. Contents: Notes on Introduction to Chromosome Notes on the Meaning of Chromosome Notes on the Number [...]
The following points highlight the three main constituents of nucleus. The constituents are: 1. Nuclear Envelope 2. Nucleolus 3. Nucleoplasm. Constituent # 1. Nuclear Envelope: Under the electron microscope the nuclear envelope appears to consist of two membranes, the outer and the inner nuclear membranes, separated by a perinuclear space of 20 nm (Fig. 2.65). Each of the two membranes [...]
The following points highlight the top six types of hypothesis with respect to origin of eukaryotic cell. The hypothesis are: 1. Independent Hypothesis 2. Endogenous Theory (Filiation Theory) 3. Chimera Hypothesis 4. Endosymbiotic Theory 5. Serial Endosymbiotic Theory (Set) 6. Syntrophy Hypothesis. Type # 1. Independent Hypothesis: The unique nature of the eukaryotic nucleus with structurally complex chromosomes is thought [...]