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Heterochromatin is a densely packed form of chromatin that remains transcriptionally inactive and typically encompasses large genomic regions beyond individual genes or regulatory elements. The term “heterochromatin” was introduced by Emil Heitz in 1928. Heterochromat...
A gene is a sequence of DNA that codes for RNA or a Protein. It is the basic unit of hereditary that is passed from one generation to another. The gene determines the characteristics of the offspring. What is a Gene? The term gene was coined by Danish botanist Wilhelm Johannsen....
Human sex is determined by a pair of sex chromosomes, the X and Y chromosomes. These sex chromosomes form one of the 23 pairs of human chromosomes in each cell. Females have two X chromosomes (XX), and males have one X and one Y chromosome (XY). The human Y chromosome plays a vit...
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