In this article we will discuss about:- 1. Definition of Down's Syndrome 2. Physical and Physiological Features of Down's Syndrome 3. Chromosomal Findings 4. Incidence 5. Causes. Definition of Down's Syndrome: The first autosomal abnormality described in man by John Langdon Down (1966) was known as Down's syndrome, more commonly used as mongolism. In this case, there is simple trisomy [...]
In this article we will discuss about:- 1. Diagnostic Features of Cat's Cry Syndrome 2. Modification of Cat's Cry Syndrome 3. Findings. Diagnostic Features of Cat's Cry Syndrome: Some of the following features are not absolute in occurrence, and in that case values in the parentheses are the frequency of occurrence: i) The name of this syndrome refers to the [...]
In this article we will discuss about the chromosome theory of inheritance. In order to understand the role played by chromosomes as carriers of hereditary material, we must turn the clock backward to some landmarks in the history of genetics. The earliest records date back to the work of the 18th Century plant hybridisers. One of them Kolreuter had some [...]