haploid


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to haploid: Haploid number

haploid

 [hap´loid]
having half the number of chromosomes characteristically found in the somatic (diploid) cells of an organism; typical of the gametes of a species whose union restores the diploid number.

hap·loid

(hap'loyd),
Denoting the number of chromosomes in sperm or ova, which is half the number in somatic (diploid) cells; the haploid number in normal human beings is 23.
Synonym(s): monoploid
[G. haplos, simple, + eidos, appearance]

haploid

(hăp′loid′)
adj.
Having a single set of unpaired chromosomes, as in a germ cell, such as an egg or sperm, or in a moss plant or a drone bee.
n.
An organism having haploid cells.

haploid

Genetics adjective Referring to:
1. A normal chromosome complement–expressed as n.
2. A cell with only one copy of each chromosome type–ie, half the number of chromosomes present in other cells; gametes–ie, sperm and ova are haploid. See Chromosome, Diploid, Polypoid, Prokaryote.

hap·loid

(hap'loyd)
Denoting the number of chromosomes in sperm or an oocyte, which is half the number in somatic (diploid) cells; the haploid number in normal human beings is 23.
[G. haplos, simple, + eidos, appearance]

haploid

Having half the number of chromosomes present in a normal body cell. The germ cells, the sperms and eggs (ova) are haploid, so that, on fusion, the full (DIPLOID) number is made up. From the Greek haploeides , single.

haploid

  1. (of a cell nucleus) containing one of each type of chromosome.
  2. a haploid organism in which the main life stage has cell nuclei with one of each type of chromosome, written as ‘n’. Such organisms (e.g. fungi, many algae) usually have a brief DIPLOID (2) phase (2n), returning to the haploid state via MEIOSIS. See ALTERNATION OF GENERATIONS.
References in periodicals archive ?
In a plant where 2n = 6 represents the diploid condition, n = 3 represents the haploid condition that results from meiosis I.
Study of haploid production in Iranian onion cultivars (Allium cepa L.) via in vitro gynogenesis.
One advantage of using haploid ESCs is that even before the problematic genes are knocked out, they contain less of the imprinting programming that ultimately causes maternal- or paternal-specific genes to be expressed.
impaternata karyotypes [2:179] comprise two unmatched haploid chromosome sets with 5 and 14 chromosomes, respectively (Figure 2(b)).
Two different phenotypes of fetuses with chromosomal triploidy: correlation with parental origin of the extra haploid set.
determining whether diploid single PNi are larger than those with a haploid constitution, exact measurements of the pronuclear diameter followed by genetic analyses will be necessary.
During the fertilization period, at least 100 eggs have been used in each of haploid gynogen, diploid gynogen and control groups and the sperm/egg ratio to be performed has been 0.5 ml/number.
This technology consists of stimulation and germination of haploid plants via anther or microspores culture.
Stock-6 x (CMST x Ig-gene) and (Ig-gene x Stock-6 x CMST) x (Stock-6-BC4) showed satisfactorily higher haploid induction rate.
Microspore culture and the performance of microspore derived doubled haploid in Brassica juncea L.