(of a gene or genetic sequence) present in a genome in only one copy.
〔遗传〕（基因，基因序列）单拷贝的
P9 is a single-copy subclone
Example sentencesExamples
The presence of one copy in each of the three homoeologous chromosomes suggests that they were also present as single-copy genes in the common ancestor of the A, B, and D genomes.
An important conclusion that can be drawn from the present study is that great caution is needed when selecting a nuclear, putatively single-copy gene for phylogenetic studies.
The endogenous AtHD1 is a single-copy gene located on chromosome 4.
In each species, we determined DNA sequence variation of five single-copy genes located in chromosomal regions with either high or low recombination rate.
We have only used provably single-copy genes from completed genomes, and therefore this analysis is different to most other analyses in this respect.
Definition of single-copy in US English:
single-copy
adjectiveˈsiNGɡəlˌkäpē
Genetics
(of a gene or genetic sequence) present in a genome in only one copy.
〔遗传〕（基因，基因序列）单拷贝的
P9 is a single-copy subclone
Example sentencesExamples
The presence of one copy in each of the three homoeologous chromosomes suggests that they were also present as single-copy genes in the common ancestor of the A, B, and D genomes.
We have only used provably single-copy genes from completed genomes, and therefore this analysis is different to most other analyses in this respect.
An important conclusion that can be drawn from the present study is that great caution is needed when selecting a nuclear, putatively single-copy gene for phylogenetic studies.
In each species, we determined DNA sequence variation of five single-copy genes located in chromosomal regions with either high or low recombination rate.
The endogenous AtHD1 is a single-copy gene located on chromosome 4.