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Topic: Syngamy

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		Syngamy literally means “married together” and is the moment when the genetic material from the egg and the sperm join to become one.
		It occurs in the fertilized egg about 20 hours after the sperm has entered.
		A few hours before syngamy the sperm’s chromosomes and the egg’s chromosomes are visible as separate ‘spheres’ (or vacuoles) called pronuclei.
	www.delhi-ivf.com /moral_belief1.html (461 words)

	reproduction2
		The 2 sperm cells move down the tube to fertilize (syngamy) the egg cell and polar nuclei in the ovule in a unique double fertilization event.
		Pollination is arrival of the pollen at the stigmatic surface.
		Syngamy is actual fusion of the male and female gametes.
	www.clas.ufl.edu /users/gbowes/bsc2010/reproduction2.htm (857 words)

	Protozoa - LoveToKnow 1911
		It is true that in many types of Protozoa syngamy is not known as yet to occur, but in all species which have been thoroughly investigated syngamy in some form has been observed, and there is nothing to lead to the belief that the sexual process is not of universal occurrence in the Protozoa.
		Hence the macrogamete is the passive element in syngamy, which requires to be sought out and" fertilized "by the active microgamete, a division of labour perfectly analogous to that seen in the male and female gametes of Metazoa.
		In those cases where syngamy takes place by interchange of nuclear substance between two gametes which remain separate from one another, as in the Infusoria, each gamete forms two pronuclei, which are distinguished by their behaviour as the active and passive pronuclei respectively.
	www.1911encyclopedia.org /Protozoa (9869 words)

	Fertilisation - Wikipedia, the free encyclopedia
		Fertilisation, also spelled fertilization (also known as conception, fecundation and syngamy), is fusion of gametes to form a new organism of the same species.
		In animals, the process involves a sperm fusing with an ovum, which eventually leads to the development of an embryo.
		With multi-seeded fruits, multiple grains of pollen are necessary for syngamy with each ovule.
	en.wikipedia.org /wiki/Syngamy (1248 words)

	Fertilisation - Biocrawler (Site not responding. Last check: )
		Fertilisation (also known as fertilization and syngamy) is fusion of gametes to form a new organism.
		The process is easy to visualize if one looks at maize silk, which is the female flower of corn.
		You can find it there under the keyword Syngamy (http://en.wikipedia.org/wiki/Syngamy)The list of previous authors is available here: version history (http://en.wikipedia.org/w/index.php?title=Syngamyandaction=history).
	www.biocrawler.com /encyclopedia/Syngamy (556 words)

	lifeissues \| The Beginning of a Human Life
		In recent years the term "syngamy" (from the Greek words together and marriage) has been altered in meaning from the union of gametes to the (later) union of the pro-nuclei.
		To prevent the continuing development of the cell (zygote) formed by joining of egg and sperm (syngamy) and to terminate the ensuing development is to terminate this human life.
		Immediately upon the fusion of the sperm membranes with the cell membrane of the ovum, the cytoplasm of the ovum enfolds and gathers in the sperm head and tail, and releases granules which are in the outer part of the cell.
	www.lifeissues.net /writers/bil/bil_11mrslifebeginning.html (2020 words)

	The Diploid Life Cycle (Site not responding. Last check: )
		The receptacles are reproductive branches and contain many cavities with external pores which contain antheridia (male) and oogonia (female), then through meiosis, sperm (1n) and egg(1n) are produced.
		Syngamy occurs when the two fuse and become a zygote (2n).
		After syngamy, the zygote developes into a young, and then an old 2n multinucleate plasmodia.
	www.ucmp.berkeley.edu /glossary/gloss6/diploid.html (269 words)

	Pollen tube - Wikipedia, the free encyclopedia
		The second sperm unites with the central cell of the ovule, and this union produces the endosperm of the seed, which is composed of starch, proteins and oils.
		The number of pollen grains needed for pollination/syngamy is equivalent to the number of ovules.
		One can look at a cut watermelon to identify the mature seeds that resulted from syngamy, and the white, undeveloped seeds that resulted from a failure of syngamy.
	en.wikipedia.org /wiki/Pollen_tube (368 words)

	UCMP Glossary: Life history
		Asexual reproduction occurs without meiosis or syngamy, and may happen though budding, by the division of a single cell, or the breakup of an entire organism into two or more parts.
		The mature sporophyte meiotically produces haploid spores that later generate the gametophyte generation.
		syngamy -- The process of union of two gametes; sometimes called fertilization.
	www.ucmp.berkeley.edu /glossary/glossary_6.html (858 words)

	pop beads
		All the chromosomes of one color represent the genetic contribution of one of the parents that gave rise to the mother nucleus.
		Syngamy ends with the joining of two nuclei and results in a doubling of the number of chromosomes found in one nucleus.
		to diagram of syngamy resulting in the chromosomal composition of the mother nucleus.
	botit.botany.wisc.edu /courses/botany_130-fall2004/Meiosis/pop.html (619 words)

	The Haploid Life Cycle (Site not responding. Last check: )
		Colonial alga such as red alga, brown alga, and green alga and filamentous alga such as red, green, and brown alga all exhibit haploid life cycle.
		Volvox, for example is a colonial green algae in which both male gametes and egg are produced in the 1n stage, which then fuse together to form a zygospore, an encysted zygote that is protected from the harsh conditions of the environment.
		Syngamy occurs when the sperm and egg fuse and forms the zygote (2n).
	www.ucmp.berkeley.edu /glossary/gloss6/haploid.html (288 words)

	Meiosis
		The opposite process would be syngamy or fertilization, which is the union of the egg and sperm to restore the 2n number.
		Thus, the life cycles alternate between 1n and 2n stages, and between the processes of meiosis and syngamy.
		It is because of the way in which genes recombine in meiosis and syngamy that we have the whole study of genetics.
	biology.clc.uc.edu /courses/bio104/meiosis.htm (1102 words)

	Nomenclature Table 1 (Site not responding. Last check: )
		The interval during which all plant resources contribute toward a steady rate of starch accumulation in the starch storage unit, encompassing syngamy through physiological maturity.
		The "birthing" of physiologically viable kernels; a phase encompassing a sequence of critical events: tassel emergence, silk emergence, pollen shed, syngamy and fruit set.
		'filling phase,' above), beginning at syngamy and concluding with physiological maturity (fl layer formation); consisting of sporophyte and endosperm differentiation, and starch, oil and protein accumulation.
	www.public.iastate.edu /~rjsalvad/manuscripts/nomenclature/nomentab1.html (408 words)

	Plant Basics (Site not responding. Last check: )
		One sperm cell unites in syngamy with the nearby egg, forming a zygote.
		A second syngamy occurs between the second sperm from the generative cell's division and the central cell of the embryo sac to produce the primary endosperm cell.
		This double syngamy is an autapomorphy of the flowering plant clade.
	plantphys.info /Plant_physiology/plantbasics2.html (900 words)

	The human sperm centrosome is responsible for normal syngamy and early embryonic development -- Palermo et al. 2 (1): ...
		As early as 1887, it was postulated that the mature oocyte possesses all of the elements necessary for embryonic development with the exception of an active division centre, and that the spermatozoon contains such a centre, but lacks the substrate in which to operate.
		At gamete fusion the sperm tail is incorporated into the ooplasm, and the centriolar region forms the sperm aster while the sperm head is decondensing; this aster acts to guide the female pronucleus towards the male pronucleus.
		The centriole duplicates during the pronuclear stage, and at syngamy centrioles are found at opposite poles of the first cleavage.
	ror.reproduction-online.org /cgi/content/abstract/2/1/19 (681 words)

	IVF Ethics Morals Religion Belief Faiths Christianity Christian Catholic Church Brethren Islam Moslem Kosher Jewish Jew ...
		Syngamy literally means 'married together'; and is the moment when the genetic material from the egg and the sperm join to become one.
		In vitro fertilisation with cryostorage prior to syngamy has been acceptable to some of our observing patients.
		Some Christian couples might have a preference for IVF with PGD (preimplantation genetic diagnosis) over prenatal testing of the fetus for genetic disease prevention, as prenatal testing may lead to a difficult decision as to a termination of pregnancy.
	www.sydneyivf.com /page.cfm?id=43 (852 words)

	Syngamy is the process of cellular union cellular union during... (Site not responding. Last check: )
		Syngamy is the process of cellular union cellular union during...
		"Syngamy" is the process of cellular union cellular union during fertilization fertilization.
		Encyclopedia of Molecular Cell Biology and Molecular Medicine: Regulation of Syngamy and Cell Cycle Control to Triacylglyerol Storage and Mobilization v.
	www.biodatabase.de /Syngamy (85 words)

	Reproductive semi-cloning respecting biparental embryo origin: Embryos from syngamy between a gamete and a haploidized ...
		Embryos from syngamy between a gamete and a haploidized somatic cell
		syngamy between a gamete nucleus and a haploidized somatic cell
		Palermo, G.D., Colombero, L.T. and Rosenwaks, Z. (1997) The human sperm centrosome is responsible for normal syngamy and early embryonic development.
	humrep.oxfordjournals.org /cgi/content/full/17/8/1933 (3453 words)

	Definition of syngamy - Merriam-Webster Online Dictionary
		Learn more about "syngamy" and related topics at Britannica.com
		Find more about "syngamy" instantly with Live Search
		See a map of "syngamy" in the Visual Thesaurus
	m-w.com /dictionary/syngamy (26 words)

	Pugetia reproduction and life cycle
		To further ensure syngamy (fertilization), the female gametophyte must have effective spermatia collecting mechanisms.
		It would be very interesting to use molecular sequencing to decipher what level of gene flow occurs between these populations, or even between weeds growing on different tube worms.
		Synchrony of gamete production and release would be crucial for successful syngamy and to prevent gamete loss.
	www.mbari.org /staff/conn/botany/reds/pugetia/lifecycle.htm (1023 words)

	Life Cycles (Site not responding. Last check: )
		There is no such thing as a "fertilized egg"...once syngamy has occurred it is a zygote...
		Of course if syngamy puts two complete genomes together, the chromosome count is twice as much after syngamy.
		This means that probably when syngamy evolved as an effective passage for the life history, the resulting zygote was useless until meiosis could restore the normal condition.
	koning.ecsu.ctstateu.edu /Plant_Biology/lifecycle.html (909 words)

	OSSM Ecology
		In animals, syngamy usually requires the physical interaction of mating males and females.
		In seed plants, syngamy requires a mechanism for transferring pollen from floral structures within or between individuals (self-pollination vs.
		In spore-forming plants such as ferns, horsetails, and mosses; syngamy requires mechanisms for fusion of egg and sperm, usually water.
	www.ossm.edu /biology/ecln4.htm (1034 words)

	09lifehist
		In eukaryotes, sexual reproduction consists of an alternation of meiosis, which produces haploid cells, and syngamy (or fertilization), which produces diploid cells.
		This type of life history is typified by the presence of two vegetative stages: a gametophyte or haploid stage and a sporophyte or diploid stage.
		The sporophyte produces haploid spores by meiosis, which are released from the parent plant and settle down to develop into the gametophyte.
	userwww.sfsu.edu /~biol240/labs/lab_09algae/pages/09lifefist.html (1112 words)

	Syngamy (Site not responding. Last check: )
		Exclusion of male mitochondria and plastids during syngamy in...
		Significant competitive advantage conferred by meiosis and syngamy...
		And it ends with fertilization, syngamy and karyogamy.
	www.specieslist.com /science/terms/ST/Syngamy.shtml (288 words)

	Life Cycles (Site not responding. Last check: )
		There is no such thing as a "fertilized egg"...once syngamy has occurred it is a zygote...
		Of course if syngamy puts two complete genomes together, the chromosome count is twice as much after syngamy.
		This means that probably when syngamy evolved as an effective passage for the life history, the resulting zygote was useless until meiosis could restore the normal condition.
	plantphys.info /Plant_Biology/lifecycle.html (909 words)

	Biol 1A - Lecture 10
		A. Sexual reproduction is an extended process, defined by meiosis and syngamy.
		Syngamy is the fusion of two haploid cells to make a diploid cell (zygote).
		These pages for the personal use of students and teachers; any commercial use or publication is strictly prohibited.
	www.ucmp.berkeley.edu /people/brs/biol1a/Lect10.html (411 words)

	ScienceDaily: Birth Control Articles
		The menstrual cycle is the set of recurring physiological changes in a female's body that are under the control of the reproductive hormone system and necessary for reproduction.
		Fertilisation, also spelt fertilization (also known as conception, fecundation and syngamy), is fusion of gametes to form a new organism of the same species.
		Enter a keyword or phrase to search ScienceDaily's archives for related news topics, the latest news stories, reference articles, science videos, images, and books.
	www.sciencedaily.com /articles/health_medicine/birth_control (517 words)

	Meiosis
		Requires gamete formation and then fusion of gametes (syngamy) to form a zygote
		gametic meiosis - meiosis give rise to gametes which fuse together in syngamy (fertilization).
		Therefore, in animals, sexual reproduction involves a regular alternation between meiosis and syngamy.
	arnica.csustan.edu /boty1050/Meiosis/meiosis.htm (982 words)

	Seeds and Fruits (Site not responding. Last check: )
		You were also introduced to the events leading up to double syngamy.
		The endosperm, the product of syngamy of the central cell and sperm, accumulates much storage material that is used for the development of the embryonic plant.
		It may store considerable amounts of food material, or it may transfer the food materials to the cotyledon(s) of the embryo and disappear completely.
	koning.ecsu.ctstateu.edu /plants_human/seedfruitlab.html (1095 words)

	A pathology of the sperm centriole responsible for defective sperm aster formation, syngamy and cleavage -- Rawe et al. ...
		A pathology of the sperm centriole responsible for defective sperm aster formation, syngamy and cleavage -- Rawe et al.
		CONCLUSIONS: We propose that the alterations in the
		We propose that the lack of syngamy and cleavage
	humrep.oxfordjournals.org /cgi/content/full/17/9/2344 (3555 words)

	HCE09a Artificial Reproduction, Fetal Testing,
		the oocyte is transferred before syngamy is complete so that conception takes place in the mother
		the oocyte is transferred before syngamy is complete so that conception takes place in the mother <=> pronuclear stage tubal transfer (PROST)
		Before continuing, you might try some wrong answers.
	academic.uofs.edu /faculty/PM363/ME/hce09a0l.htm (404 words)

	syngamy - French-English Dictionary WordReference.com
		We found no French translation for 'syngamy' in our English to French Dictionary.
		Or did you want to translate 'syngamy' from French to English?
		Please report any problems that you are having with searches that didn't occur before.
	www.wordreference.com /enfr/syngamy (79 words)

	The Evolution of Sex Dimorphism in Recombination -- Lenormand 163 (2): 811 -- Genetics
		after syngamy on autosomes because both male and female individuals
		Its average QLE value measured after syngamy is
		The frequency change at the modifier is obtained using Equation 12.
	www.genetics.org /cgi/content/full/163/2/811 (5464 words)

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