hap·loid
ˈha-ˌplȯid 
: having or involving one set of homologous chromosomes
haploid plant spores
Among animals, the haploid phase is generally restricted to unicellular gametes, which do not undergo further mitoses, followed by gamete fusion leading to a diploid phase, which occupies essentially the entire lifespan of the organism.—
Sarah P. Otto and Aleeza C. Gerstein
compare diploid
Sarah P. Otto and Aleeza C. Gerstein
plural haploids
: a single cell, individual, or generation characterized by a single complete set of chromosomes
Haploids, derived from diploid plants, are generated from gametes of only one parent having a single copy of each chromosome.—Maria Jose Gonzalo et al.
Maria Jose Gonzalo et al.Examples of haploid in a Sentence
Recent Examples on the Web
Discover Magazine, 13 Feb. 2012
Additionally the haploid nature of mtDNA means that genetic drift is far more powerful in buffeting gene frequencies and introduced stochastic fluctuations, which eventually obscure past mutational signals through myriad mutations.
—Razib Khan, Discover Magazine, 19 Apr. 2011
Recently, molecular studies on the basis of disease-causing mutations and haploid DNA markers (i.e. mtDNA and Y-chromosome) supported the linguistic view.
—Razib Khan, Discover Magazine, 9 Dec. 2012
This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide.
—Jonathon Keats, Discover Magazine, 18 Dec. 2016
By rapidly screening many of them, the researchers could isolate cells that stayed haploid after division — about 1 in 1,000.
—Jonathon Keats, Discover Magazine, 19 Dec. 2016
In 2001, Dr. Gianpiero Palermo of the Weill Medical College at Cornell University in New York announced that his team created artificially haploid eggs by borrowing techniques from cloning.
—Brian Alexander, WIRED, 1 Dec. 2005
This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide.
—Jonathon Keats, Discover Magazine, 19 Dec. 2016
Jonathon Keats, Discover Magazine, 18 Dec. 2016
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Adjective
Asexual whiptails have a special trick for making spermless reproduction work: The egg cells in other animals first double their choromosomes once and then divide twice, leaving them as haploid cells, with half the normal number of genetic material.
—Discover Magazine, 13 Feb. 2012
Additionally the haploid nature of mtDNA means that genetic drift is far more powerful in buffeting gene frequencies and introduced stochastic fluctuations, which eventually obscure past mutational signals through myriad mutations.
—Razib Khan, Discover Magazine, 19 Apr. 2011
Recently, molecular studies on the basis of disease-causing mutations and haploid DNA markers (i.e. mtDNA and Y-chromosome) supported the linguistic view.
—Razib Khan, Discover Magazine, 9 Dec. 2012
This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide.
—Jonathon Keats, Discover Magazine, 18 Dec. 2016
By rapidly screening many of them, the researchers could isolate cells that stayed haploid after division — about 1 in 1,000.
—Jonathon Keats, Discover Magazine, 19 Dec. 2016
In 2001, Dr. Gianpiero Palermo of the Weill Medical College at Cornell University in New York announced that his team created artificially haploid eggs by borrowing techniques from cloning.
—Brian Alexander, WIRED, 1 Dec. 2005
This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide.
—Jonathon Keats, Discover Magazine, 19 Dec. 2016
Noun
By rapidly screening many of them, the researchers could isolate cells that stayed haploid after division — about 1 in 1,000.
—Jonathon Keats, Discover Magazine, 18 Dec. 2016
Dictionary Entries Near haploid
Cite this Entry
“Haploid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/haploid. Accessed 29 Nov. 2024.
Copy CitationMedical Definition
haploid
adjective
hap·loid
ˈhap-ˌlȯid
: having the gametic number of chromosomes or half the number characteristic of somatic cells : monoploid
haploid
noun
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