In this article we will discuss about the normal and abnormal haemoglobins. I. Normal Haemoglobin: Haemoglobin consists of 4 polypeptide (globin) chains each associated with a single haem group. There are 5-6 types of haemoglobins normally present at different stages of life, from zygote to adulthood. The embryonal haemoglobins (HbE) are heterogeneous and designated Gower-1, Gower-2 and Portland. In the [...]
In this article we will discuss about the top two types of inherited diseases that are found in families. The diseases are: 1. Diabetes Mellitus 2. Muscular Dystrophies. Disease # 1. Diabetes Mellitus: This is a complex, heterogeneous condition which is frequently seen to recur in certain families. It is due to partial or complete lack of insulin which leads [...]
Get the answer of: When is Prenatal Diagnosis Done ? Prenatal diagnosis by amniocentesis is useful for prevention of birth of genetically abnormal children. Families having repeated abortions and/or congenital malformations (defects from birth) are likely to be carriers of a genetic anomaly ("high risk" families). The genetic counsellor can estimate the probability or chance for a future child in [...]