Tag Archives | Chromosome Number

Variation of Chromo­some Number in Human | Genetics

In this article we will discuss about the chromosomal aberrations and variation of chromosome number in human. Any anomaly in the normal structure of chromosome or any variation in the normal karyotype of human causes an abnormal development of human or resulting in zygotic loss, still births or infant death. The degree of the abnormalities in the human structure will [...]

By |2016-12-12T07:34:23+00:00December 12, 2016|Chromosomes|Comments Off on Variation of Chromo­some Number in Human | Genetics

Euploidy: Meaning and Classification | Genetics

In this article we will discuss about the meaning and classification of euploidy. Meaning of Euploidy: Most diploid sexually reproducing organisms have an alternation between a haploid and a diploid state in the life cycle. The haploid state, mostly confined to germ cells, is characterised by the presence of a single set of chromosomes (n). When two haploid germ cells [...]

By |2016-12-12T07:24:41+00:00December 12, 2016|Genetic Engineering|Comments Off on Euploidy: Meaning and Classification | Genetics

Biology Notes of Colchicine | Genetics

The below mentioned article provides notes on colchicine. In 1937 O.G. Eigsti first succeeded in inducing tetraploidy in cells of onion root tips by the chemical colchicine. This is an alkaloid obtained from the seed and corm of liliaceous plant Colchicum autumnale. In high concentrations the drug is highly toxic to cells. If used in concentrations as low as 0.01% [...]

By |2016-12-12T07:24:41+00:00December 12, 2016|Genetics|Comments Off on Biology Notes of Colchicine | Genetics
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