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Meiosis in Biological Dictionary

Zygotene

... zygotene ( ) n. The stage in prophase of meiosis during which homologous ... present in Zygotene meiosis I? ... Use of bouquet arrangement in zygotene ... zygotene the second stage of the prophase of meiosis ... How many chromosome are present in ...

Telophase

... "φασις" (stage), is a stage in either meiosis or mitosis in an eukaryotic cell reversing ... telophase n. The final stage of mitosis or meiosis during which the chromosomes of daughter ... Read ... telophase the final stage of meiosis when the chromosomes move toward opposite ends ...

Syngamy

... " Categories: English nouns | Biology ... meiosis and SYNGAMY . The basis of sexual reproduction is meiosis and syngamy . ... meiosis and Syngamy | Gametes | Evolution of Life ...

Spermatogenesis

... n. Formation and development of spermatozoa by meiosis and spermiogenesis. ... Spermatogenesis is ... spermatogenesis . 5. Mutants that affect sperm meiosis ... Spermatogenesis is the process that ... of spermatogenesis following the completion of meiosis ... during spermatogenesis . Numerous genes are ...

Recombination nodules

... complex (SC), and two types of ... Male meiosis in Mesostoma ehrenbergii ehrenbergii (2x = 10) ... Protein To Early Recombination Nodules During meiosis ... Early recombination nodules (ENs) are ... Definition of recombination nodules : ... in meiosis are catalyzed by these recombination nodules ....

Nondisjunction

... of homologous chromosomes to separate in meiosis I, or the failure of sister chromatids to separate during meiosis II or mitosis. The result of this error is a ... . ... Nondisjunction can occur in the meiosis I or ...

Meiosis

... In biology, meiosis is a process of reductional division in which ... chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, ... organisms it can give rise ... In biology, meiosis is a process of reductional division in which ...

Megasporocyte

... ) ... (meiocytes) that undergo meiosis to form spores. Microsporangia (male sporangia) ... ... ... Botany. A cell that undergoes meiosis to produce four megaspores. Also called ... through four-nucleate ... Early telophase of meiosis I of megasporocyte . Developing cell plate ...

Megasporangium

... which bear sporocytes (meiocytes) that undergo meiosis to form spores. Microsporangia (male sporangia) ... contains a megasporocyte which divides by meiosis to make four megaspores. ... is sitting against ... contains a megasporocyte which divides by meiosis to make four megaspores. ... is sitting against ...

Megaspore

... mother cell is a diploid cell in which meiosis will occur, resulting ... The one of these ... formation of female gametes from ovule to meiosis to megaspore division to embryo sacs, ... diploid megaspore mother cell divides by meiosis to produce four haploid ... mitotic divisions ...

Leptotene

... leptotene the first stage of the prophase of meiosis ... is a Kind of: leptotene . Top. is a kind ... /lep·to·tene/ (lep'to-tēn) the stage of meiosis in which the ... 5.1.1.1 Leptotene . 5.1.1.2 ... ... Leptotene : Early stage of prophase in meiosis in which the ... leptotene - Hutchinson ...

Interkinesis

... the abbreviated interphase that occurs between meiosis I and II. No DNA replication occurs during ... n. See interphase. ... What cell in meiosis 1 proceeds to interkinesis ? ... What happens ... which the nuclear membrane reappears between meiosis I and II, ... the membrane is again visible, is ...

Haploid Cell

... haploid sets, or 23 ... In biology, meiosis is a process of reductional division in which ... chromosomes per cell is halved. In animals, meiosis always results in the formation of gametes, ... called the "gamete. ... The zygote undergoes meiosis immediately, creating four haploid cells . ......

Diploid nuclei

... & produces 4 haploid nuclei . 1-2n® meiosis I ® meiosis II ® 4-1n ... Information about diploid in ... ... A diploid (2n) sporophyte undergoes meiosis to produce haploid (1n) reproductive ... ...

Synaptonemal complex

... protein structure that forms between two homologous chromosomes during meiosis and that is thought to mediate chromosome pairing, synapsis, and ... ... cell physiology > cell cycle > cell division > meiosis > synaptonemal complex ... No sub-categories defined. Resources in ...

Secondary oocyte

... ... secondary ... A secondary oocyte will undergo a second round of meiosis to ... Secondary oocyte information including symptoms, causes, ... encyclopedia entries, essays, summaries, research ... oocyte undergoes meiosis (see CELL DIVISION) to become a secondary oocyte . ... Health care ...

Prophase

... nuclear membrane breaks down, and the prophase the first stage of meiosis ... diplotene — the fourth stage of the prophase of meiosis ... How does prophase you differ from prophase II? ... During ...

Primary oocyte

... gametogenesis begins in fetal life, but is arrested in prophase of meiosis I ... Primary , oocyte ,biological ,biology dictionary,biology ... essays, summaries, ... An immature OVUM: a primary oocyte undergoes meiosis (see CELL DIVISION) to ... Definition of primary oocyte at ...

Oogenesis

... the various stages of immature ova. Oogenesis is the process of meiosis in female organisms from an oogonium to a ... Oogenesis begins soon ... ... mRNA localization and translational control during oogenesis . meiosis in females ... Genes involved in oogenesis ... stage 10 of oogenesis , ...

Independent assortment

... Law of Independent Assortment speaks of alleles ... Looking at meiosis and how independent assortment of chromosomes and crossing over ... ... Scenario for independent assortment of genes across ... (a) meiosis I doesn't furnish offspring with genetic variation just by ...

Haploid

... number. DNA (deoxyribonucleic acid ) ... Sex cells are produced by the meiosis process and have a haploid number of chromosomes. ... THE HAPLOID ... involves three or more times the haploid number of ... In biology, meiosis is the process that transforms one diploid cell into four haploid ...

Diplotene

... see diplo-, -tene. Dictionary.com ... diplotene dip·lo·tene ... meiosis n. , pl. -ses ( ). Genetics. The process of cell division in sexually ... dictionary and ... diplotene - the fourth stage of the prophase of meiosis ... During the diplotene stage, also known as diplonema, from Greek ...

Diploid

... - a FREE online library ... diploid ... In biology, meiosis is the process that transforms one diploid cell into four haploid ... by Koh on 2009-05-19 02:57:26 as ... posted to body diploid electron meiosis microscopy pole scerevisiae spindle ... diploid Cells that contain ...

Diakinesis

... paired chromosomes, diakinesis the final stage of the prophase of meiosis ... diakinesis . meiosis -kinesis. Post a question - any question - to the WikiAnswers community: .....

Chromomere

... DNA thread. It is visible on a chromosome during the prophase of meiosis and mitosis. Giant banded chromosomes results from the replication of ... structure that is visible in a chromosome during prophase of meiosis and mitosis, when it is relatively uncoiled (in particular at ... ...

Synapsis

... , Last synapsis n. , pl. -ses . The side-by-side association of homologous paternal and maternal chromosomes during the first prophase of meiosis Explore your subconscious in this mysterious and superb David Lynch style escape ... If you like Synapsis try these: Being One: Episode 2. The ...

Sterile cell

... for thousands of great items like the Tissue Culture Dishes. In homozygous sterile plants, pollen mother cells abort prior to completing meiosis (Figs. ... cells varied significantly between fertile and sterile plants. ... S1569 Stemline Mesenchymal Stem Cell Expansion Medium Without ...

Sporophyte

... quotes. ... sporophyte definition. spo·ro·phyte ... sporophyte Usage Examples. Converse of object ... A diploid (2n) sporophyte undergoes meiosis to produce haploid (1n) reproductive ... This sporophyte produces spores by meiosis, which germinate and develop into a ... Alternation of ...

Spermatogonia

... influencing retroviral transduction into spermatogonia are not well understood. ... The mitosis of differentiating spermatogonia , the meiosis of spermatocytes, and ... Undifferentiated type A spermatogonia could repopulate the seminiferous ... Loss of spermatogonia and wide-spread ...

Spermatid

... only half of the genetic material present in the original primary spermatocyte. spermatid n. Any of the four haploid cells formed by meiosis in a male organism that develop into spermatozoa without further spermatid an immature gamete produced by a spermatocyte; develops into a ...

Sperm cells

... ... Mature sperm cells are about 0.05 millimetres long, and are made up of a head, ... The sex cells , sperm and ova, are produced by meiosis in special tissues of male ... The number of sperm cells produced can be significantly diminished by ... Adult stem cells extracted from ...

Sister Chromatids

... sister chromatid -based repair may also be shared ... Is the choice between sister chromatid and homologous chromosome in the two ... At meiosis I, sister chromatids attach to the same spindle pole while homologous ... Cohesin is localized on paired sister chromatids and dissociates ...

Sex cells

... progenitors of the gametes. These singled-out cells move through the gut to the developing gonads and undergo mitotic proliferation followed by meiosis and differentiation into either eggs or sperm . Plants do not have a germ line set aside in ... sex cell n. A germ ... Sex ...

Reproduction

... parent, without the ... This method of reproduction is rapid and effective allowing the spread of ... The Biology Project > Cell Biology > meiosis > Reproduction . The Biology Project ... Animated Science, Health, Technology, Math, Social Studies and English movies, comic strips, activity ...

Pollen grain

... in these minute grains . ... Sperm cells from inside the pollen grain then travel down the tube to ... Pollen grains are produced by meiosis of microspore mother cells that are ... a pollen grain . Note the thick sculptured exine around the pollen grain of Lilium. ... ...

Oogonia

... Oogonia information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues. ... Oogonia undergo meiosis and give rise ... oogonium n. , pl. -nia or -niums . A cell that arises from a primordial germ cell and differentiates into an oocyte in the ...

Multi-locus probe

... methods and more ... Analysis of multi - locus probes (MLP) cannot be easily automated, ... Malignant Maple lactone Mapping Megabase cloning meiosis Messenger RNA (mRNA) Metabolism Metallothionein ... Multi - locus probe . Mutagen. Mutation. Mutualism ... multi - locus probes used for ...

Mitosis

... ... Offers a pictorial tour of the process of cell division. Be able to characterize, compare, and contrast the products of mitosis and meiosis ... When an egg is fertilized, it undergoes mitosis to form a large mass of cells ... This study guide introduces you to the basics of ...

Mismatch repair

... System (MMRS) of Escherichia ... Molecular Mechanism(s) for Mismatch Repair ... Switches - Mismatch Repair - Recombinational Repair - meiosis - Proteome - Publications ... Science and technology news stories tagged with keyword: mismatch repair . ... Variations in mismatch repair ...

Megabase cloning

... Next: megabase cloning , megacalycosis, megacardia, megacaryoblast, Site Navigation: ... Malignant Maple lactone Mapping Megabase cloning meiosis Messenger RNA (mRNA) ... Molecular cloning . Molecular genetics. Monoclonal antibodies. Monoculture. Monogenic ... Megabase cloning . Meiosis. ...
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