Report: Scientists have completely mapped chromosomes linked to major diseases

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Scientists have produced a complete map of human chromosomes 9 and 10, which are linked to diseases including cancer, diabetes and Alzheimer's, according to the journal Nature.

This brings to nine the number of human chromosomes that which have been fully sequenced and analyzed. Humans have a total of 46 chromosomes -- 22 pairs, plus two gender-related chromosomes.

Scientists found that chromosome 10 contains 816 genes and 430 pseudo-genes. Pseudo-genes are strips of DNA, which resemble genes but do not behave as such. Of these, 85 are associated with diseases, such as type one diabetes, schizophrenia and Alzheimer's disease.

Chromosome nine contains 1,149 genes responsible for encoding proteins, as well as 426 pseudo-genes. Of these, 95 are associated with diseases.

Humans have an estimated 30,000 to 40,000 genes. These genes encode more than 10 times that number of proteins to make a human being, according to the AFP.

Sean Humphray of Welcome Trust Sanger Institute, Hinxton, Britain, led the research team.