Relationship Analysis of DNA Family

Using PCR knowledge DNA analysis is extensively practical to decide hereditary family relationships such as fatherhood, motherhood, sibling ship and other kinships

During beginning, the father’s sperm cell and the mother’s egg cell, each containing half the amount of DNA found in other body cells, meet and blend to form a fertilized egg, called a zygote. The zygote contains a complete set of DNA molecules, a unique combination of DNA from both parents. This zygote divides and multiplies into an embryo and later a full person being

At each phase of growth, all the cells forming the body contain the same DNA half from the father and partially from the mother. This fact allows the association testing to use all types of all samples including loose cells from the cheeks collected using buccal swabs, blood or other types of samples

While a lot of DNA contains information for a convinced function there is some called junk DNA which is currently used for human identification. At some special locations (called loci) in the junk DNA predictable legacy patterns were found to be useful in determining biological relationships. These locations contain specific DNA markers that DNA scientists use to identify individuals. In a routine DNA paternity test, the markers used are Short Tandem Repeats (STRs) short pieces of DNA that occur in highly differential repeat patterns among individuals

Each person’s DNA contains two copies of these markers one copy innate from the father and one from the mother. Within a population, the markers at each person’s DNA place could be different in length and sometimes series depending on the markers innate from the parents

The mixture of marker sizes found in each person makes up his/her unique genetic profile. When determining the relationship between two individuals, their genetic profiles are compared to see if they share the same inheritance patterns at a statistically conclusive rate.