Lecturer
Genes and Genetic Diseases
Gene: Is a fundamental unit of information storage.
Genes control inheritance and function of all the cells in the body e.g.
Genes control the type and quantity of hormone.
They control the receptors that are present in the cell membrane.
They control the enzymes synthesis needed for metabolism.
Genes determine the type of proteins and enzymes that are made by the cell.
The DNA molecule is composed of nucleotides
which consist of:
Five carbon sugar is called deoxyribose.
Phosphoric acid
One of four nitrogenous bases (Adenine, Guanine, Cytosine, and
Thymine).
Adenine and Guanine are originated from purin, while cytosine
and thymine orginated from pyrimidine.
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