chromosome number

(redirected from Haploid number)
Also found in: Medical.
Related to Haploid number: Diploid number

chromosome number

n
(Genetics) the number of chromosomes present in each somatic cell, which is constant for any one species of plant or animal. In the reproductive cells this number is halved. See also diploid1, haploid
References in periodicals archive ?
The discrepancy between the number of LGs and the haploid number of chromosomes is very common in other studies on shellfish such as Japanese scallop (Liu et al.
177) little cytoplasm and a haploid number of chromosomes gonad human testis or human National Health Act (No.
labrusca, have a haploid number of 19 chromosomes, longitudinally shredding bark, lack lenticels on the stems, and possess a non-continuous pith that is segmented by diaphragms.
In humans, the haploid number of chromosomes is 23; only sperm and egg cells attain the haploid state.
Diploid cells have two sets (2n) of chromosomes, half that number, one set (n), is termed the haploid number.
However, the haploid number was present in telophase nuclei of the first and second division.
The studied material showed a chromosome haploid number n = 4, and diploid number 2n = 8.
While most of the species have a haploid number of 19 chromosomes, some have 16 (Wada, 1978; Komaru and Wada, 1985), and one species, Aequipecten opercularis, has 13 (Beaumont and Gruffydd, 1974).
in which C is the haploid number of chromosomes, L is the total map length in centimorgans, X/2 is the desired distance within which a marker must fall, and N is the number of segregating markers.
About a third of them had 21 chromosomes - the normal haploid number for oats - plus 1 to 4 corn chromosomes.
reduction division: First nuclear division of meiosis during which the paired homologues migrate to opposite poles, resulting in cells with a reduction from a diploid to a haploid number of chromosomes.