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| | MRC HGU - RNA metabolism in gametogenesis |
 | | Gametogenesis is critical for the species at a number of levels, at the most basic it is required for reproduction and although in the case of human males spermatogenesis is thought by some to be under environmental threat from oestrogen mimicking pollutants the real threat probably comes from overproduction. | | | In the biological longer term a critical component of gametogenesis is meiosis and recombination which serves to generate variability and provide the driving force behind sexual reproduction. | | | Genes which simply cause infertility are relatively few but they provide useful start points from which to follow pathways unique to the process of gametogenesis. |
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http://www.hgu.mrc.ac.uk/Research/Chrombio/Germline/howard.htm
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| | Journal of Shellfisheries Research: Histological studies on hermaphroditism, gametogenesis and cyclic changes in the ... |
| | Histologic preparations were made to study the sexuality, gametogenesis, and morphologic changes in the structures of the demibranchs by light microscopy. | | | Journal of Shellfisheries Research: Histological studies on hermaphroditism, gametogenesis and cyclic changes in the structures of marsupial gills of the introduced asiatic clam, corbicula fluminea, and the Korean clam, corbicula leana | | | Histological studies on hermaphroditism, gametogenesis and cyclic changes in the structures of marsupial gills of the introduced asiatic clam, corbicula fluminea, and the Korean clam, corbicula leana |
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http://www.findarticles.com/p/articles/mi_m0QPU/is_1_23/ai_n10298929
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| | DNIrving -- Human Beginning |
| | To accurately see why a sperm or an oocyte are considered as only possessing human life, and not as living human beings themselves, one needs to look at the basic scientific facts involved in the processes of gametogenesis and of fertilization. | | | One of the best and most technically accurate explanations for this critical process of gametogenesis is by Ronan O'Rahilly, | | | This would include such basic terms as: "gametogenesis," "oogenesis," "spermatogenesis," "fertilization," "zygote," "embryo," and "blastocyst." Only brief scientific descriptions will be given here for these terms. |
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http://www.vanderbilt.edu/SFL/dnirving_--_human_beginning.htm
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| | FRANK J. LONGO, Ph.D. |
| | Current research tests the hypothesis that sperm chromatin dispersion is coordinate with the activity of the maternal chromatin, i.e., changes in nucleocytoplasmic interactions affecting the status/function of the maternal genome also influence the pattern of sperm chromatin dispersion at fertilization. | | | Investigations carried out in my laboratory are concerned with events of gametogenesis, fertilization, and early development. |
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http://www.anatomy.uiowa.edu/pages/directory/faculty/longo.html
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| | ARS Publication request: Gametogenesis |
| | The gametes sperm and egg fuse to yield a zygote. | | | Technical Abstract: Gametogenesis, the process of gamete formation, initiates after specialized cells in the sporophyte undergo meiosis; subsequent mitotic divisions yield the gametophyte phase of the plant life cycle. |
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http://www.ars.usda.gov/research/publications/publications.htm?SEQ_NO_115=136011
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| | Gametogenesis & Fertilization |
| | While much of your time will be spent in the gross anatomy laboratory examining adult human structure it is important to understand the developmental processes that are in place that achieve our complex structure. | | | Today we will begin with gametogenesis which is the development and production of the male and female germ cells required to form a new individual and fertilization which is the process by which male and female gametes fuse to form a zygote. |
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http://www.humangrossanatomy.ws/embryology/perrault/fertilization05html_std/img0.html
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| | BI97Life\BI97Temp |
| | Fertilization and the development of the embryo from the zygote occur within the female reproductive organs. | | | Gametogenesis and fertilization represent the continuum of processes that culminate in the formation of a zygote, a unique combination of genetic traits of two parents. | | | In females the diploid oogonium undergoes two divisions of meiosis, but only one of the four resulting haploid nuclei will develop into a fully differentiated ovum; the other three nuclei become polar bodies and degenerate. |
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http://www.woodrow.org/teachers/bi/1997/gamtfert/mammals.htm
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| | Bio 32: Interruption of Reproduction |
| | Female gametogenesis takes place within the ovaries of the developing embryo. | | | These gametes arise from primordial germ cells within the developing gonads (either ovaries or testes). | | | Germ cells originate in the yolk sac of the embryo and migrate to the developing gonads, where they eventually give rise to female or male gametes by gametogenesis (oogenesis in females, or spermatogenesis in males). |
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http://www.brown.edu/Courses/BI0032/repro/nrepro.htm
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| | Quia - Gametogenesis in Mammals |
| | A review of the microanatomy of rat testis and cat ovary, with emphasis on the process of gametogenesis. | | | To learn how to make your own, just like this, click here. | | | This activity was created by a Quia Web subscriber. |
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http://www.quia.com/tq/146097.html
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| | Re: Does human life begin with gametogenesis? |
| | __Subject__: Re: Does human life begin with gametogenesis? | | | That males produce sperm is a given, for example, but > what they do with them is not. | | | > > In my original post I neglected to mention what I see as the > implications of a belief that life begins with gametogenesis might be, > but instead refered those interested to a website dealing with these > ponderables. |
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http://www.usenet.com/newsgroups/talk.origins/msg00370.html
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| | Developmental Biology Links |
| | AA Hammerling's Acetabularia - A site that has an outline on the experiments done using Acetabularia and cap regeneration. | | | MH E-Solutions For Science - A site featuring ground-breaking scientific research news, developmental biology resources, and links to databases and journals. | | | JM Green Sea Urchin Gametogenesis - This site depicts and describes normal and altered gametogenesis in the Green Sea Urchin. |
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http://www.sandiego.edu/~cloer/bio176f02/176links.html
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| | Pollen development and fertilization in Arabidopsis is dependent on the MALE GAMETOGENESIS IMPAIRED ANTHERS gene ... |
| | [Keywords: P-type ATPase; secretory pathway; pollen; male gametogenesis] | | | Pollen development and fertilization in Arabidopsis is dependent on the MALE GAMETOGENESIS IMPAIRED ANTHERS gene encoding a Type V P-type ATPase -- Jakobsen, et al. | | | Articles by Jakobsen,, M. Articles by Palmgren,, M. Pollen development and fertilization in Arabidopsis is dependent on the MALE GAMETOGENESIS IMPAIRED ANTHERS gene encoding a Type V P-type ATPase |
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http://www.genesdev.org/cgi/content/abstract/19/22/2757
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| | OSSM Vertebrate Zoology Lab |
| | Chapters 4 and 5: Gametogenesis and Embryology; and Tissue Structure and Function. | | | Be prepared to recognize any of the various types of tissues that may later be set up as a lab practical quiz or practical component of an exam. |
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http://www.ossm.edu/biology/vzlab2.htm
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| | Dr. Ross's Vertebrate Embryology Course Home Page |
| | Topics: Meiosis and Oogenesis (human oogenesis, timing of those events, associated ovarian structures); Anatomy of human female reproductive system; hormones of the human female. | | | in Lab Ex 2 folder), Lab exercises 1 and 2, Schoenwolf Gametogenesis tutorial Powerpoint slides (in the main Lab Unit 1 folder), Wright lab atlas, lecture slides. | | | in Lab Ex 3 folder), Lab exercise 3, Schoenwolf Gametogenesis tutorial Powerpoint slides (in the main Lab Unit 1 folder), Wright lab atlas, lecture slides. |
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http://www.cbu.edu/~aross/embhome.htm
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| | Ecology: Evidence of chemical communication during the gametogenesis of holothuroids.@ HighBeam Research |
| | Search for more information on HighBeam Research for. | | | This research provides evidence for chemical mediation in the initiation of gametogenesis and interindividual fine-tuning among populations of the holothurian Cucumaria frondosa. | | | Initiated in the laboratory by increased day length, the gametogenesis of C. frondosa developed normally when individuals were transferred to an environment in which temperature and photoperiod were held constant and food was withheld. |
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http://www.highbeam.com/library/doc0.asp?DOCID=1G1:18601066&refid=ip_encyclopedia_hf
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| | Gametogenesis |
| | Gametogenesis is the production of haploid gametes by diploid multicellular organisms through the process of meiosis. | | | For more information about Scientia, contact us at info@scientia.org. |
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http://www.scientia.org/cadonline/Biology/reproductive/gametogen.ASP
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| | - Google Scholar |
| | Found no articles citing Kalejs: Cancer/testis antigens and gametogenesis: a review and" brain-storming" session. |
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http://www.biomedcentral.com/pubmed/gs/15715909
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| | Jean-Philippe Vielle-Calzada, Ph.D. |
| | We believe that, by using such reverse genetic approaches, the specification and differentiation of cells involved in early female gametogenesis can be genetically manipulated before attempting the modification of the sexual reproductive pathways that prevail in flowering plants. | | | A philanthropy serving society through biomedical research and science education. | | | We routinely analyze expression patterns in all enhancer detector/gene trap lines to identify individuals that show expression during stages of female gametogenesis and early seed development. |
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http://www.hhmi.org/research/scholars/vielle.html
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| | Gametogenesis definition - Medical Dictionary definitions of popular medical terms |
| | Gametogenesis definition - Medical Dictionary definitions of popular medical terms | | | Gametogenesis: The development and production of the male and female germ cells required to form a new individual. | | | MedicineNet Home > MedTerms medical dictionary A-Z List > Gametogenesis |
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http://www.medterms.com/script/main/art.asp?articlekey=12352
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| | CELL DIVISION: Meiosis... |
| | Gametogenesis is the process of forming gametes (by definition haploid, n) from diploid cells of the germ line. |
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http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookmeiosis.html
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| | GAMETOGENESIS |
| | Gametogenesis is the process of formation of gametes from the germ cells in the testes and ovaries. | | | Many principles of gametogenesis are the same in both males and females, and will be considered first. | | | Explain the significance and importance of meiosis in sexual reproduction |
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http://staff.um.edu.mt/acus1/GAMETOGENESIS.htm
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| | Green Sea Urchin Gametogenesis |
| | One must very carefully consider the stage of gametogenesis that characterizes a particular individual in order to determine what cellular population (germinal or somatic) actually predominates in size and/or numbers within its germinal epithelium (Walker et al. | | | Changes in the germinal epithelium of the sea urchin gonad have been described using the staging systems of Fuji (1960 a, b) based on germinal cells and of Nicotra and Serafino (1988) based on nutritive phagocytes (NP) (Unuma et al. | | | It is important to recognize that the size of sea urchin gonads does not necessarily relate to the progress of gametogenesis alone. |
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http://zoology.unh.edu/faculty/walker/urchin/gametogenesis.html
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| | Biology Lab 14 71:125 |
| | Gametogenesis is the process of sperm or ovum production and as stated above involves cell division by meiosis. | | | We will examine gametogenesis as it occurs in mammals. | | | In the mature male functional sperm cells are produced within the |
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http://www.umanitoba.ca/faculties/science/biological_sciences/lab14/biolab14_2.html
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| | Inter-Gametogenesis and NP Phagocytosis |
| | The inter-gametogenesis and NP phagocytosis stage begins late during or after the spawning of most fully mature ova and spermatozoa and seems to be under the control of the NP. | | | The basis for this idea is that residual oocytes invariably exist and seem to grow within the germinal epithelium before gametogenesis begins for the year (Walker et al. | | | The basis for NP recognition of different stages of gametogenesis is unknown, but it undoubted involves both structural features of the NP (e.g. |
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http://zoology.unh.edu/faculty/walker/urchin/postspawn.html
(737 words)
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| | Gametogenesis - EvoWiki |
| | In genetics, gametogenesis is the process by which gametes are formed from diploid germ line cells. | | | This page was last modified 10:26, 16 May 2005. | | | You can help the EvoWiki by expanding it into a full article. |
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http://wiki.cotch.net/index.php/Gametogenesis
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| | Gametogenesis |
| | Gametogenesis describes and includes all the processes involved in the production of reproductive cells or gametes (spermatozoa or oocytes) from stem cells, the primordial germ cells (PGC). | | | Gametogenesis include spermatogenesis (production of spermatozoa) and oogenesis (production of oocytes/eggs). |
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http://www.gfmer.ch/Endo/Course2003/Gametogenesis.htm
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| | UNSW Embryology- Beginnings, Growth and Development - Laboratory 3 - Gametogenesis |
| | With the help of the tutors and other students you will work your way through identifying features described in the text. | | | UNSW Embryology- Beginnings, Growth and Development - Laboratory 3 - Gametogenesis | | | At any one time the majority of follicles are destined not to complete maturation and at any stage (from type 4-7) degeneration of the follicle can occur. |
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http://embryology.med.unsw.edu.au/Medicine/BGDlab3_3.htm
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| | Gametogenesis |
| | This chapter is aimed at university students beginning their studies in biological sciences, and is designed to serve as an introduction to more advanced courses. | | | The On-Line Biology Book is aimed at university students beginning their studies in biological sciences, and is designed to serve as an introduction to more advanced courses. | | | Tables of contents and abstracts from May 1998, vol.6, no.2 are available free. |
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http://bioresearch.ac.uk/browse/mesh/D005718.html
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| | Theory of Evolution - EvoWiki |
| | Meiosis is the type of cell division which occurs in gametogenesis, the process by which gametes (sex cells) are produced. | | | The same processes of mutation take place in both types of cell division. |
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http://www.evowiki.org/index.php/Theory_of_Evolution
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| | Gametogenesis |
| | Ultrastructure of Human Gametogenesis and Early Embryogenesis (Electron Microscopy in Biology and Medicine) (reference) | | | Source: compiled by the editor from various references; see credits. | | | "Gametogenesis" is generally used as a noun (singular) -- approximately 100.00% of the time. |
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http://www.websters-online-dictionary.org/definition/english/Ga/Gametogenesis.html
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| | Gordon Research Conference on Mammalian Gametogenesis and Embryogenesis |
| | National Institute for Medical Research, UK The 'synapsis checkpoint' in male meiosis | | | Gordon Research Conference on Mammalian Gametogenesis and Embryogenesis | | | Novel method in demonstrating nuclear contribution and monitoring nuclear reprogramming in mouse nuclear transfer |
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http://www.grc.uri.edu/programs/1998/mamgamet.htm
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| | e-Prints Soton - Gametogenesis, spawning behaviour, and early development in the 'iceworm' Hesiocaeca methanicola ... |
| | Gametogenesis, spawning behaviour, and early development in the 'iceworm' Hesiocaeca methanicola (Polychaeta: Hesionidae) from methane hydrates in the Gulf of Mexico | | | e-Prints Soton - Gametogenesis, spawning behaviour, and early development in the 'iceworm' Hesiocaeca methanicola (Polychaeta: Hesionidae) from methane hydrates in the Gulf of Mexico | | | In the future it will become an official university service, but until then should be considered volatile. |
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http://eprints.soton.ac.uk/7895
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| | RED02: Gametogenesis to Implantation |
| | have a comprehensive understanding of the origin of gametes and gametogenesis in both the male and female and be able to describe the process of fertilisation and implantation in vivo and in vitro |
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http://www.redmsc.org.uk/open/units/unitRED02.htm
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| | Prefertilization Events |
| | In females, most of gametogenesis occurs during embryonic development. | | | Primordial germ cells (46,2N) migrate into the testes at week 4 of development and remain dormant. | | | In males, gametogenesis begins at puberty and continues into advanced age. |
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http://www.med.umich.edu/lrc/coursepages/M1/embryology/embryo/02prefertilization.htm
(621 words)
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| | Gametogenesis - The Doctors Lounge(TM) |
| | The pattern of gene regulation during gametogenesis is among the most unusual of all cell types. | | | Then get started here by becoming a member of The Doctors Lounge. |
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http://www.thedoctorslounge.net/fertility/articles/gametogenesis
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