Chromosomes of the Tasmanian Devil Facial Tumour Disease (DFTD). The contagious cancer is spread through allograft, so one devil bites another on the face and cancerous cells will grow.
A) Normal karyotype for a male devil - 14 chromosomes inc. X, Y.B) Karyotype of cancer cells found in EVERY FACIAL TUMOUR (13 chromosomes, no sex chromosomes, no chromosome #2 pair, only one chromosome #6, deleted arm on chromosome #1, four additional ‘marker’ chromosomes (M1-M4)
From Pears & Swift (2006) in Nature
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