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Gametes in Biological Dictionary

Syngamy

... and syngamy . ... Meiosis and Syngamy | gametes | Evolution of Life Cycles ... Sexual ... ovule. ... syngamy n. The fusion of two gametes in fertilization. syngamic syngam ' ic or syn ' ... , ... syngamy The union of nuclei of two gametes to produce a zygote nucleus, ... ...

Haploid gametophyte

... plant of the gametophyte generation produces gametes by mitosis. ... Gametophyte – haploid ... - a haploid plant which produces gametes ... Haploid cells undergo mitosis to ... plant of the gametophyte generation produces gametes by mitosis. ... Haploid cells undergo ...

Haploid

... at Dictionary.com a ... haploid cells. ... the gametes (reproductive cells) are haploid . Compare ... Haploid from Biology-Online.org dictionary. ... gametes being haploid are essential particularly during ... haploid ... In most animals, only the gametes (reproductive cells) are haploid . ... ... ...

Gametes

... produce two morphologically distinct types of gametes , and in which each ... ... and differentiation to form mature haploid gametes . Depending on the biological life cycle of the ... Dictionary.com a free online dictionary with ... gametes may be identical in form (isogamy), as in the ...

Gamete

... (one set of chromosomes), that ... These gametes that are fusing may be of similar size (isogamy) ... Microgamete, Nullisomic gamete . ... gametes (in Greek: γα&amp ... of the sets of ... In most organisms the gametes are produced by a special double cell ...

Somatic cells

... ... The term somatic refers to cells of the body, rather than gametes (eggs or sperm). In humans, somatic cells contain two copies of each chromosome (diploid), whereas gametes only contain one copy of each chromosome (haploid). Although all ...

Somatic

... The term somatic refers to cells of the body, rather than gametes (eggs or sperm). In humans, somatic cells contain two copies of each chromosome (diploid), whereas gametes only contain one copy of each chromosome (haploid). Although all ...

Sex cells

... of any resulting zygote, as the genotype of the sex -determining ... gametes are haploid cells ; that is, they contain half(n) of a complete set of ... die, ... Meiosis, a type of cell division, results in production of gametes (eggs & sperm). Genetically unique sex cells combine at ...

Pollination

... and sexual reproduction. Pollen grains, which contain the male gametes (sperm) to where the female gamete(s) are ... pollination ( ... ... Why is pollination necessary ? The pollen contains the male gametes (sperm) ... If you want to understand why pollination is such a ...

Microgametophyte

... a microgametophyte (male gametophyte), which ultimately produces male gametes (sperm), and ... microgametophyte synonyms, microgametophyte ... Flora of ... vegetative growth of the microspore, that produces the male gametes of a ... The development of the microgametophyte (male gametophyte) ...

Megaspore

... and develops into ... This site descibes the formation of female gametes from ovule to meiosis to megaspore division to embryo sacs, female gametes and ultimately fertilization and ... megaspore a large spore ...

Gonads

... the testes Gonads are the true sex organs, generating reproductive gametes containing ... The absence of it allows the gonads to continue to ... - Clusty - Gigablast ... The gonad is the organ that makes gametes. gametes are ... The gonads are controlled hormonally by luteinizing hormone ...

Gametogenesis

... ... Gametogenesis . o the process of formation of the male and female gametes ... Many principles of gametogenesis are the same in both males and ... the On-Line Biology Book. ... Gametogenesis is the process of forming gametes (by definition haploid, n) from ... Gametogenesis . ... Zoo 317 ...

Fertilization

... of: Fertilization and Early Embryonic Development. Structure of the gametes Before Fertilization . Cleavage and Blastocyst Formation ... ... fertilization in the free online ... In cross- fertilization , the two gametes come ... self- fertilization . superfecundation. More results ... Iron ...

Zygospore

... . The spore of certain fungi and algae formed by the union ... zygospore . ... zygospore . n. cell formed by joining of two similar gametes (Biology) ... A zygospore remains dormant while it waits for environmental cues, such as ... Zygospore information including symptoms, ...

Spermatogenesis

... Spermatogenesis is the process by all males spermatogonia develop into mature spermatozoa. Spermatozoa are the mature male gametes in many sexually reproducing organisms. Thus, spermatogenesis is the male version ... spermatogenesis n. Formation and development of ...

Self-pollination

... process by which pollen is transferred in plants, thereby enabling fertilisation and sexual reproduction. Pollen grains, which contain the male gametes (sperm) to where the female gamete(s) are ... Pollination , transfer of pollen grains from the male structure of a plant to the ... ...

Reproduction

... introduction to the mechanisms of sexual reproduction in animals. ... In animals, sexual reproduction encompasses the fusion of two distinct gametes to form ... In biology, reproduction is the process by which new individual organisms are produced. Reproduction is a fundamental feature of ...

Random mating

... mating model is. are ... Random mating with singly mated females is not equiva ... Random mating means that alleles (as carried by the gametes -- eggs or sperm) ... Situations where the random mating assumption does not hold include: ... NetPets - Your Complete Internet Pet ...

Pollen tube

... grain, and does not convey ... Pollen is a fine to coarse powder consisting of microgametophytes ( pollen grains), which produce the male gametes (sperm cells) of seed plants. A hard coat covering the pollen grain protects the sperm cells during the ... The pollen tube in ...

Pollen grain

... Pollen is a fine to coarse powder consisting of microgametophytes ( pollen grains), which produce the male gametes (sperm cells) of seed plants. A hard coat covering the pollen grain protects the sperm cells during the ... pollen n. The fine ...

Oviducts

... Key ... The mammalian oviducts are highly specialized organs that provide the optimal ... Within the oviducts the male and female gametes are transported to the site of ... ... necessitated by the condition of the oviducts have been outlined in detail. ... With oviducts that ...

Oviduct

... epithelial cells displayed a continued depletion of GSH over ... The oviduct provides the proper environment for the final preparations gametes ... Basic Histology -- Ciliated Epithelium of Oviduct . Cilia are a surface adaptation ... Oviduct epithelium features occasional cells ...

Meiosis

... events that occur in process of meiosis , which takes place to produce gametes. Meiosis is a special type of cell division that produces gametes with half as many chromosomes. ... Here is another animated explanation of the steps in meiosis . ... In biology, meiosis is the process by ...

Megagametophyte

... spores produce two types of gametophytes: each microspore develops into a microgametophyte (male gametophyte), which ultimately produces male gametes (sperm), and ... Megagametophyte - Definition of Megagametophyte at Dictionary.com a free online ... In the seed plants, the ...

Independent assortment

... 4 Mendelian trait ... Principle of Independent Assortment . Dihybrid cross ... The principle of independent assortment says that when gametes are formed in ... Independent Assortment . An example of linkage. Testcross. Chromosome Maps. What about humans? ... these genes showed ...

Imprinting

... summaries, research information, and more. ... Imprinting refers to the chemical modification ... The process of imprinting starts in the gametes where the allele destined to be ... Imprinting and Parthenogenesis ... harvested before imprinting occurs and ... Provide information to ...

Haploid Cell

... gamete ( haploid sex cell ) to produce 47 chromosome offspring with the fusion. ... The process of meiosis, the creation of 4 haploid gametes from a mother cell from two successive meiotic divisions. ... Haploid cells possess only one set of a ... From the On-Line ... Haploid ...

Gymnosperms

...... Gymnosperms . Background. As land-dwelling plants ... Types of Gymnosperms ... Unlike the ferns, in gymnosperms the spores as well as the gametes come in two ... Biology4Kids.com! The web site that teaches the basics of biology and life science to everyone! ... But remember this: ...

Germplasm

... ... Germplasm maintenance and conservation are useful only when they are utilised ... Today we know that only the germplasm — the gametes and the cells that form them ... Once the opportunity to pass germplasm on has passed, there is no need to ... Online Shopping at ...

Germ line

... individual is the line (sequence) of germ cells that have genetic material that may be passed to a child. The cells that give rise to the gametes are often set aside during cleavage. During development, these cells will differientate into primordial germ cells, migrate to the location of ...

Genotype

... at a Distance --- Definition --- Relationship ... In our example the letters represent the genes involved in the genotype . ... Hence the gametes for the male parent ( genotype Aa) carry either the A allele or ... ...

Genetic mosaic

... clonal behavior in genetic mosaics to imaginal disk cells. ... In germ-line genetic mosaics , cell selection may affect the number of gametes of ... COBRA is an open access, scholar-driven repository of biostatistics ... A genetic mosaic is a genetically composite organism, within ...

Gametophyte

... of two- or ... The number of male gametophyte -specific transcripts ranged from 857 (BCP) to 625 ... Gametophyte : ... Gametophytes produce gametes via mitosis in ... The gametophyte is the dominant stage in the life cycles of liverworts, mosses, and hornworts. ... Register today for a ...

Fecundity

... reproduce. In biology and demography, fecundity is the potential reproductive capacity of an organism or population, measured by the number of gametes (eggs), seed set or asexual propagules. Fecundity is under both genetic and environmental control, and is the major measure ... ...

Diploid nuclei

... nuclei , and meiosis. ... In many fungi, the zygote nuclei are the only diploid nuclei of the life cycle. ... The male and female gametes fuse, making a diploid zygote. ... ...

Diploid

... cell and gives rise to a diploid embryo The other sperm ... Polyploid organisms contain two or more sets of chromosomes. ... Diploid gametes are frequently formed in this way. When a diploid gamete fuses with a haploid ... Diploid Cell ... Diploid Number. The number of ...

Dihybrid cross

... the information that they have ... Results of Mendel's dihybrid crosses ... dihybrid cross . • Each F1 produces four. different types of gametes in. equal proportions ... Dihybrid crosses . 1. About 70% of Americans perceive a bitter taste from the ... What were the genotypes of the ...

Diploid Cell

... cell may still be classified as diploid (although with aneuploidy) ... Human diploid cells have 46 chromosomes and human haploid gametes ... The yeast Saccharomyces cerevisiae is a simple single celled eukaryote with both a diploid and haploid mode of existence. The mating ...

Developmental biology

... ... Developmental biology is the study of the process by which organisms grow and develop. ... How humans reproduce, from the formation of gametes to the creation of a zygote. ... Human developmental biology looking at the creation and growth of humans from ... ...
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