Describe The Central Transporter And Short Thick Filaments.
Cell transporter – The central transporter is a protein ring with two irises of 8 arms each. These work like... View Article
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Brief How Chromosomes Serve The Carrier Of Genes From One Generation To Another.
Chromosomes are composed of nucleoproteins. Most of the nucleic acid is in the form of DNA. Small amounts of RNA... View Article
Where Were The Salivary Gland Chromosomes First Observed?
It was first seen by E.G. Balbiani in salivary gland cells of Chironomus larvae. Hence, they are called salivary gland... View Article
What Are Lampbrush Chromosomes?
Lampbrush chromosomes appear during the diplotene stage of meiosis in a developing oocyte, measuring about 700 m – 5900 m... View Article
How Long Does The M Phase Last?
M phase lasts for a short period when compared to the interphase. The cell undergoes division during the M phase.... View Article
Brief About Prophase I.
Prophase I lasts for a long duration including leptotene, zygotene, pachytene, diplotene and diakinesis. During leptotene, the chromosomes appear thin,... View Article
How Is Radiation A Physical Carcinogen?
Cancer producing agents are called carcinogens. They could be – Physical carcinogens Chemical carcinogens Biological carcinogens Physical carcinogen: Radiations –... View Article
Give Any 6 Orders Of Class Schizomycetes.
Class Schizomycetes is classified into 10 orders, out of which six are as follows – Pseudomonadales – rod-shaped or spiral... View Article
What Are The Orders Of Class Myxophyceae?
The class Myxophyceae includes 150 genera and 1500 species. The class includes 5 orders – Chroococcales – includes unicellular or... View Article
Describe The Classification Of Viruses Proposed By Holmes.
Holmes’ classification – Viruses are placed under one order Virales that is further classified into the following groups- Bacteriophaginae –... View Article
What Is Distemper?
Many viral diseases are observed in domestic animals. They are identified by their symptoms. Dog distemper disease and rabies are... View Article
Brief About The Structure Of HIV.
HIV (Human Immunodeficiency Virus) is one of the spheroidal types of viruses, usually attaining a diameter of 1000Å. The central... View Article
Describe The Lytic Stage Of Bacteriophage.
The vegetative stage follows the latent stage (eclipse phase) and the lytic stage follows the vegetative stage. The lytic or... View Article
Who First Discovered Viroids?
Diener and Raymer in 1967 were the first to discover viroids when they were studying the spindle tuber disease in... View Article
What Is A High-frequency Recombination Strain?
The F factor in the male cell may exist as a separate DNA molecule called plasmid or episome. In E.Coli... View Article
Why Are Ammonification And Nitrification Carried Out In Soil Always?
There are many bacterial species that are capable of increasing the fertility of the soil by fixing nitrogen in the... View Article
What Is Anthrax?
It is an infectious disease occurring among the wild and domestic animals like sheep, cattle, goats, antelopes, etc. this may... View Article
What Is An Ulcer?
An ulcer is a crater-like lesion or erosion in the membrane. These are developed in the alimentary canal, and it... View Article
Describe The Structure Of The Filament Of Cyanobacteria.
Many filaments are held up by the mucilage within the colony. Each filament is represented by an unbranched chain of... View Article
How Does Nostoc Reproduce By Heterocysts?
Heterocyst cells form a weak link and help in hormogonia formation. But in some species (for example – Nostoc commune),... View Article
