The phrase "a sample of chromosomes" is correct and usable in written English.
You can use it in contexts related to genetics, biology, or medical research when referring to a subset of chromosomes taken for analysis or study.
Example: "The researchers collected a sample of chromosomes from the patients to study genetic variations."
Alternatives: "a chromosome sample" or "a specimen of chromosomes".
Gene order comparisons were made using the SPRING web server [ 51], which takes a sample of chromosome gene orders and orientations as its input and then computes a minimum series of reversals and/or block-interchanges necessary for transforming each chromosome into every other chromosome.
Next, custom Python and Perl scripts were used to match Stacks SNP genotypes with genome genotypes on a sample of 11 chromosomes selected to include various sizes (chromosomes 1, 5, 7, 9, 15, 20, 22, 23, 24, 26 and 28).
Following the general framework of Nielsen et al. [7], let pj be the frequency of segregating sites with derived allele frequency j in a sample of n chromosomes that has undergone no ascertainment bias (1
In a sample of 32 chromosomes from a Nordic population, we attempted to determine the allele frequencies of 80 non-synonymous SNPs, and found 20 novel polymorphic markers.
This latter prediction was tested in one population of Drosophila by measuring the intersexual correlation for adult fitness across a sample of X chromosomes.
In addition, we did not observe 159I in a sample of 450 chromosomes (115 index cases with periodic catatonia and 110 controls, respectively).
Finally, the simulated AFS n ij associated with a sample of C chromosomes per population is (14) n i j = Z Π (C ! ) 2 i !
It is important to note that the expected values of neutrality statistics like those used here are not the same for both a random sample of chromosomes and a partitioned subset of chromosomes.
Much of our knowledge about the patterns of ME insertion variation, especially in humans, has been collected by first ascertaining polymorphic ME insertion loci in a small sample of chromosomes and then genotyping those loci in a larger sample from the population (e.g., [ 3- 5]).
Inbred strains represent thus essentially a random sample of chromosomes drawn from specific wild populations or admixed from various origins.
