LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

GENETICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Disorder when blood cells are misshapen, resulting in a decrease of oxygen and caused by a defective allele for a polypeptide in hemoglobin
A
Duschenne’s muscular dystrophy
B
Turner’s Syndrome
C
sickle cell anemia
D
Down Syndrome
Explanation: 

Detailed explanation-1: -Sickle cell disease is a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disease have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.

Detailed explanation-2: -Sickle cell disease is an inherited blood disorder. It is marked by flawed hemoglobin. That’s the protein in red blood cells that carries oxygen to the tissues of the body. So, sickle cell disease interferes with the delivery of oxygen to the tissues.

Detailed explanation-3: -Sickle cell anemia is an inherited disorder of the globin chains that causes hemolysis and chronic organ damage. Sickle cell anemia is the most common form of sickle cell disease (SCD), with a lifelong affliction of hemolytic anemia requiring blood transfusions, pain crises, and organ damage.

Detailed explanation-4: -Sickle cell disease is a genetic disorder caused by mutations in the beta globin genes that leads to faulty hemoglobin protein, called hemoglobin S. Hemoglobin S changes flexible red blood cells into rigid, sickle-shaped cells. These sickle cells can block blood flow, and result in pain and organ damage.

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