The word human ecology is derived from the Greek “oikos”—a dwelling place. The term refers to study of living things in their environment, their interaction with the physical world, and their relationship with other forms of life. It records the constant adjustment to change, which is in turn the basis of natural selection and the … Read more
There are two aspects to genetic counseling: the estimate of the genetic risk and the humane presentation of the risk to the patient, taking into consideration all the social and psychologic implications of the probability estimate. Most of those who seek advice from a genetic counseling clinic suffer from predominantly non genetic disorders. The taking of … Read more
Chromosomal Breakage Syndromes is very important topic.There are many causes have been discovered about inherited chromosome breakage.we will discuss about that in this article. Bloom’s Syndrome This disease is characterized by congenital telangiectatic erythema appearing primarily in the butterfly region of the face, other regions of the head, forearms, and dorsa of the hands. Sun … Read more
Types of Chromosomal aberrations in man are of two general types: variation in the number of chromosomes and alteration in structure. Cells containing multiples of the normal chromosome number are called polyploid, those with irregular numbers aneuploid. Trisomy, in which a particular chromosome is represented in the somatic cells in triplicate, may cause clinical disease. … Read more
Pharmacogenetics is concerned with those deviant responses to specific drugs that are genetically determined.It has long been recognized that certain people react unusually to the administration of drugs. In some instances the altered reaction has an immunologic basis; in others it appears to be idiosyncratic without any obvious cause; and in some the difference appears … Read more
The basis of population genetics is the Hardy-Weinberg law, which was formulated in a context of concern that a dominant trait would eventually displace a normal trait in the population. In particular, it arose in response to the fallacious assertion that if brachydactyly is a dominant trait then, “in the course of time, one would … Read more
