In this article we will discuss about the classification of human chromosomes on the basis of size and position of the centromere. All the human chromosomes in normal numbers (46) can be arranged in groups based on size and positions of the centromere. The resulting classification of the chromosomes is given in the following table: Methods of Human Chromosome Classification [...]
In this article we will discuss about:- 1. History of Klinefelter's Syndrome 2. Origin of Klinefelter's Syndrome 3. Symptoms 4. Ascertainment and Phenotype 5. Cytogenetic Findings 6. Frequency. History of Klinefelter's Syndrome: 1. In 1942, Klinefelter, Refenstein and Albright found nine men with small testes, aspermia, elevated urinary gonadotrophins and gynecomastics. These persons were later designated as Klinefelter's syndromic. 2. [...]
In this article we will discuss about:- 1. Introduction to Turner's Syndrome 2. Origin 3. Indications for Suspecting Turner's Syndrome 4. Features 5. Chromosome Patterns 6. Ullrich's Syndrome 7. Pure Gonadal Dysgenesis 8. Incidence XYY-Males and Criminal Behaviour. Introduction to Turner's Syndrome: Further clues to the nature of the sex- determining mechanism in human beings has come from studies of [...]