ZOOLOGY(I Year VIDEO)

Nucleosome Model Lecture by Ms. Priyanka khan.

This video is about the Nucleosome Model proposed by P. Outdet. In chromosomal organization the DNA is associated with Histone proteins .The nucleosome is the repeating unit that consists of Core particles of octamer of Histones- H2a, H2b, H3 and H4, and 140bp DNA coiled around it. The 60bp DNA is linked from outside to …

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Nephridia of Neres Lecture by Ms. Priyanka khan

This video is about the structure of Nephridia of Neres. It is an excretory organ of Neres, which is a Polychete Annelidan. Neres has Metanephridia which are exonephric type. There are one pair nephridia per segment except the head segments and pygidium. In structure nephridia have a syncytial connective tissue body consisting of nephridial tubule …

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Chromosome: Morphology, B.Sc, MSc, Lecture by Ms. Priyanka khan.

This video is about the morphology of the chromosome. Chromosomal body has elongated highly coiled DNA fibrils known as chromonema which are embedded in the matrix and matrix is covered with the pellicle. The size, shape and number of chromosome are fixed according to species. Organism having one set of chromosome are Haploid(n), with double …

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Chromosome: Chemical Composition(B.Sc, M.Sc) Lecture by Priyanka Khan.

This video is about the chemical composition of chromosome, which consists of chiefly of DNA, Histone and Non- Histone Proteins. DNA,the Polynucleotide, is the sole genetic material of the organism. Five kinds of Histone proteins help in structural organization of the chromosome and they are highly conserved during evolution among species. There are about 20 …

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Five kingdom Concept Lecture by Ms. Priyanka Khan

This is part of lecture presented by Ms Priyanka Khan, Asst. Professor in Biyani Girls College. This lecture is about R.H. Whittaker’s Five Kingdom Concept According to Five Kingdom Concept of R.H. Whittaker living beings have been categorized into 5 Kingdoms:- Monera, Protista, Plantae, Fungi and Algae. Monerans are kingdom of Unicellular Prokaryotes, Protista are …

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Translation Lecture by Dr. Priyanka Dadupanthi.

Formation of protein from RNA is known as translation. This mechanism is divided into following steps- 1. Activation of amino acids 2. Initiation 3. Elongation 4. Termination Amino acids are activated by t-RNA. These activated amino acids binds with m-RNA. AUG is initiating codon because it initiates translation. Ribosome covers whole complex (amino acid t-RNA …

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