Human Genetics

The study of human inheritance is known as human genetics. Human genetics helps to understand the human behavior, human nature, understand the diseases and understand the genetics of human being.


Patterns of Inheritance patterns and Genetic differences



A Karyotype



The human Karyotype
The human genome contains 2 sex chromosomes and 44 autosomes which sum up to 46. During the meta phase of meiosis the pictures of homologous chromosomes which are linked together are known as Karyotype. So in all there are 46 Karyotype in normal Human being.


Pedigrees

The transmission of the genetic traits over several generations is showed systematically by a diagrammatic representation known as Pedigree. Genetic disorders or diseases can be easily spotted with the help of pedigree. Autosomal dominant, x-linked, autosomal recessive and the y-linked are the different traits which can be analysed with the help of pedigree chart. Pedigree also help to calculate and show the Partial penetrance. Almost of the genetic counselors for genetics make the use of Pedigree for determining the hereditary disorders.

Autosomal Dominant Inheritance

The Autosomal traits are associated with a single on the auto some and they are also refereed as dominant as they are single. They are enough for appearance of a single trait. One of the parent must have the same trait.

Autosomal Recessive Inheritance

It is one of the pattern for a trait or a disease which can be passed through families for generations and generations. For displaying of this trait it is essential to the presence of have two copies of trait or disorder. The location of the trait or gene is found on the non-sex chromosome.