The diagram shows the karyotype of a normal female Tasmanian devil cell and the karyotype of a Tasmanian devil facial tumour cell.
M1, M2, M3 and M4 are marker chromosomes. These are chromosomes of unknown origin additional to the normal chromosomes found in the cells of Tasmanian devil facial tumour disease.
What can be deduced from the karyotypes?
- The karyotype of the tumour cells shows trisomy.
- The karyotype of tumour cells contains multiple chromosomal inversions.
- The karyotype of tumour cells contains both chromosomal insertions and deletions.
- The karyotype of the tumour cells contains more chromosomes than the karyotype of the normal Tasmanian devil cells.