Thalassemias

Thalassemia is a group of inherited blood disorders characterized by the reduced or absent production of hemoglobin, the protein responsible for carrying oxygen in red blood cells. This results in anemia, as the body’s ability to carry sufficient oxygen to tissues is impaired. Thalassemia is an important area of study in human population genetics, particularly because it offers insights into the ways in which genetic diseases can be shaped by evolutionary pressures such as natural selection.

The two main types of thalassemia are alpha-thalassemia and beta-thalassemia, both of which are inherited in an autosomal recessive pattern. This means that a person must inherit two defective copies of the gene, one from each parent, to exhibit symptoms of the disease. If only one defective copy is inherited, the individual becomes a carrier, often without showing symptoms, though they can pass the gene on to their offspring.

Alpha-thalassemia occurs when there is a mutation or deletion in one or more of the four alpha-globin genes located on chromosome 16. The severity of alpha-thalassemia depends on how many of these genes are affected. If all four genes are deleted, it can lead to a severe ____ ______ ____ ____ _______.
_________ _____ _____ ____ _________ _______.
__________ __________ _______ ____ ____ _____ _______ ______ __________ _______ _________.
__________ ____ __________ ________ _____ ____ _________ ________ ________ __________.
_______ ______ ____ _____ __________ ____ _____ _______ ____ _______ _________.
______ _________ _____ __________ _______ ____ _______ _______ ______ _____.
______ ___ ____ __________ ___ ________ ___ ___ _____.
__________ _____ _______ _______ _______ _______ _________.
____ ________ _________ ___ __________ _____.
________ ___ __________ __________ ____.
________ _________ _________ ____ ___ ___ _________ __________ __________ ________ ______ __________.
________ _____ ____ _______ ___ ___ _________ _____ _____ __________ ___.
_________ _______ ___ __________ _____ ___.
__________ _________ _______ ______ _________ ____ __________ ______ _______ _____ __________ ________.
____ _________ __________ ________ ________.
_________ _____ ______ _____ ____ ________ ___ ________ ____ _______ __________ ___.
_____ ________ _______ _______ _____ _____ ________ _____.
_________ ________ ______ _________ __________ _________ _______ ____ _____ ________ ______ __________.
__________ ___ ___ _________ ___ _________ _______ _______ _________ _______ _______ ______.
___ ____ ____ _______ _________ ______ ____ _____ __________ ______.
_____ __________ ______ ______ _____ ____ __________ ______ ______ ____.
_______ ____ ___ ________ _______ _______ _________ _________ ______ ____ _____ _____.
__________ ________ ____ ______ ________.
_____ ________ _____ __________ _____ _________ _____.
___ _____ __________ ___ __________ _______ _________ ______ ______ _____ ______ ___.
_______ ____ _________ _______ _____ _________ ____ _________ ______.
_________ _______ _______ _________ _____ _______ ___ __________ _______ _______ _______.
__________ _____ _______ ____ __________ _________ ___ ____ ________ _______ ________ _________.
________ _______ ____ ___ ________ ______ _____ ________.
____ ________ ___ _____ _________ ____ _____ ________ _________ _______ __________ ____.
________ _____ _______ ______ __________ _________ __________ __________ ___ ___.
______ _________ _________ ___ ____ ______ ________ ____ _________.
______ ______ __________ _____ ____ ___ ___ _______ ____ ____.
________ ____ _____ _____ ________ _______ _____ ________ _______ ________ _________.
__________ ________ ______ __________ ____ _____ ______.
________ __________ _________ _________ ____ ________ ________.
_______ _____ ____ ___ __________.
_____ ________ ___ __________ _____ __________ _______ ___.
_____ __________ ______ _______ _______ ____ _________ ___.
_________ __________ _________ ___ _____ ________ _______ ______ ___ ____ _______.
_________ __________ _________ _________ __________ ______.
________ ________ ______ ______ ________ __________ _____.
_______ _________ ___ _______ ___ ________ _____ _______ ____ __________.
_________ ___ ________ ________ __________.
____ _____ _________ ____ ____ _______ ________ _______ ______ ___ ________ ______.
____ __________ __________ _________ ___ __________ __________.
______ __________ __________ _________ _________ __________ __________ _________ _______ _________ _______.
____ ____ _______ _____ ____ ___ ___ _________ __________ _______.
_________ _______ _______ ________ ______ ___ ___ _________.
_______ ______ __________ _________ _________.
______ _____ _________ _________ ____ _____ _________ _________ _________.
_____ __________ __________ ______ ____ _____ ___ ______ _____ _____.
__________ _____ ___ __________ _____ ________ ________ _________ _________.
________ _____ ___ ______ _________ _____ ___ ________ __________ ______.
______ ______ ______ ________ ______ _______ _________ _______ ______ _________ __________.
_______ ________ _________ ________ ________ _______ __________.
________ ________ ___ ____ _______ __________ _______.
________ _________ ______ ______ _____ ________ ______ _________.
__________ _________ ____ _____ _______ _________ __________ __________.
___ ___ ___ ________ _______ _____ _________ __________ ______ _________ ______.
________ ________ ___ ________ _________ _________ ___ _______ ________ ____ ________.
________ ______ ________ ______ __________ ______ _________ ______ _____ ___ _________.
_____ ______ ______ ____ ______ ____ ____ _____ _____.
___ ______ ___ ______ ____ ________ ______ ____ ____ ______.
____ __________ ___ _____ _________ ___ _________ ______ __________ _________.
___ ______ _________ ___ ______ _______ ____ _______ _________ ________.
_______ ___ ________ ________ _________ ________.
_________ _____ _______ ________ _________ _____.
________ _____ _____ ____ ______ ________.
______ _____ ____ __________ ____ _____ ____ ______ ____ __________.
_________ ______ ________ ___ _____ ___ ___.
_______ ____ _______ ___ ________ ________ _____ _________ ____.
______ _____ ______ _______ _______.
_____ __________ _________ __________ _____.
_______ ________ _________ ___ _____ __________ __________.
___ ________ __________ ________ ____ __________ ______.
__________ __________ _____ _______ ______ ______ _______ _______ _______ __________ ________.
_________ ___ __________ ___ ______ ____ ________ ______ _______.
_____ ______ __________ _____ __________ ______ _________ ________ _____ _____.
____ _________ _________ _______ _______ _______.
________ ______ __________ _________ _______ ____ _________ _______ ______ ________ ____.
_________ __________ ____ ______ ___.
_________ ________ _________ _________ ________ _________.
__________ _________ _______ ________ ____ ________ ______ ________ ______ ______.
_________ ______ ___ __________ ________ ____ ________ ____ ______.
________ ___ ________ __________ _____ _________ ____ _________ _____.
____ ________ ____ ___ _____ _____ ___ __________ _____.
____ ___ __________ _________ _________ __________ _______ _________.
_____ ________ ____.
Get Full Answer on WhatsApp