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Chromosomes, Genetics - Biology - Lecture Slides

Slides, Biology

Post: January 26th, 2013
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These are the lecture slides of Biology. Key important points are: Chromosomes, Genetics, Filamentous Bodies, Carriers of Gene, Affinity for Basic Dyes, Mitotic Metaphase, Chromatin Fibers, Number of Chromosomes, Chromosome Size, Somatic Chromosome
These are the lecture slides of Biology. Key important points are: Chromosomes, Genetics, Filamentous Bodies, Carriers of Gene, Affinity for Basic Dyes, Mitotic Metaphase, Chromatin Fibers, Number of Chromosomes, Chromosome Size, Somatic Chromosome
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Chromosomes Docsity.com What Exactly is a chromosome? Chromosomes are the rod-shaped, filamentous bodies present in the nucleus, which become visible during cell division. They are the carriers of the gene or unit of heredity. Chromosome are not visible in active nucleus due to their high water content, but are clearly seen during cell division. Docsity.com • Chromosomes were first described by Strausberger in 1875. • The term “Chromosome”, however was first used by Waldeyer in 1888. • They were given the name chromosome (Chromo = colour; Soma = body) due to their marked affinity for basic dyes. • Their number can be counted easily only during mitotic metaphase. Docsity.com • Chromosomes are composed of thin chromatin threads called Chromatin fibers. • These fibers undergo folding, coiling and supercoiling during prophase so that the chromosomes become progressively thicker and smaller. • Therefore, chromosomes become readily observable under light microscope. ..

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