Genetic disorders can occur due to mutations in one gene (monogenic), multiple genes (multifactorial inheritance), and mutation in one or more chromosomes. Point mutations are where one nucleotide in ...

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Sickle cell disease (SCD) is a group of hereditary red blood cell disorders. Sickle cell anemia is a type of SCD that occurs when a person inherits genes containing an atypical form of hemoglobin.

During development of the digestive system, a complex network of nerves forms around it, creating a "second brain"—the ...