der

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der.

1. derivation.
2. derivative.
3. derive.
4. derived.
References in periodicals archive ?
Chronic myeloid leukemia (CML) is a myeloproliferative disorder characterized by the presence of the Philadelphia chromosome (Ph) which is the derivative chromosome 22 of the translocation t(9; 22) (q34.
In 2008, Wettach et al (23) described a clonal reciprocal translocation between chromosomes 1 and 10 in one HFLT, along with a further rearrangement involving the derivative chromosome 1 and chromosome 3.
Mr Brown, sitting at Alnwick council chamber yesterday, heard evidence that a pathologist had discovered Niamh possessed an abnormal female karyotype - a derivative chromosome.
Molecular studies revealed this involved the c-ABL gene on chromosome 9 and the BCR gene on chromosome 22, producing a fusion gene on the derivative chromosome 22 of the 5' region of BCR with the 3' region of the c-ABL gene.
The translocation leads to fusion of the proto-oncogene Abelson (ABL) and a particular DNA sequence known as breakpoint cluster region (BCR), thereby giving rise to 2 new chimeric genes 5' ABL-3' BCR on the derivative chromosome 9 and 5' BCR-3' ABL on the derivative chromosome 22.