The Y chromosome is inherited only through the paternal line. Sons receive their Y chromosome exclusively from their father.

The DNA packed inside every human cell contains instructions for life, written in billions of letters of genetic code. Every time a cell divides, the complete code, divided among 46 chromosomes, must ...

More than 20 years ago, the human genome was first sequenced. While the first version was full of "holes" representing missing DNA sequences, the genome has been gradually improved in successive ...

Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from ...

The human genetic blueprint is deceptively simple. Our genes are tightly wound into 46 X-shaped structures called chromosomes. Crafted by evolution, they carry DNA and replicate when cells divide, ...