In this article we will discuss about the syndromes of abnormalities that occurs in humans. 1. Autosomal Trisomy: a. Down's Syndrome (DS) or Trisomy-21: Down's syndrome is named after the physician J. Langdon Down who first described this genetic defect in 1866 and it was formerly called mongolism or Mongolian idiocy. It is usually associated with a trisomic condition for [...]
The following points highlight the top three techniques used to study the genetics of human traits. The techniques are: 1. Pedigree Analysis 2. Amniocentesis 3. Twins. Technique # 1. Pedigree Analysis: Since, in human beings controlled crosses cannot be made, so human geneticists have to resort to a scrutiny of established matings in the hope that informative matings have been [...]
In this article we will discuss about:- 1. Methods of Inbreeding 2. Genetic Effects of Inbreeding 3. Inbreeding Depression 4. Practical Applications. The process of mating of individuals which are more closely related than the average of the population to which they belong, is called inbreeding. For example, parthenogenesis in animals and apomixes and self-fertilization in plants are the most [...]