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How the Body Works : Gamete Cells
How the Body Works : Gamete Cells
Gamete Cells Gamete cells are produced to transmit genetic information from parents to their progeny. The cells are formed by a special process of cell division, called meiosis, which results in the halving of the chromosome number in each parental gamete so that the full complement can be restored when sperm and ovum unite. First , the chromosomes appear in the nucleus of the cell and then duplicate. Like chromosomes link together and exchange different section of their length before separating and lining up across the center. They are pulled to opposite poles and eventually two cells are formed, each one containing one member of each pair of chromosomes from the original cell. Then a second division begins and, in the same way, the chromosomes arrange themselves across the center of the nucleus. This time one-half of each chromosome, a chromatid, moves to the poles of the nucleus. Within the four cells that are formed each chromatid will eventually replicate to form a chromosome and each gamete cell will contain half the original chromosome number.
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GENETICS Gamete Genotypes
GENETICS Gamete Genotypes
How to get the gamete genotypes from parent genotypes
2:03
Running the Gamete
Running the Gamete
Determined sperm compete in the cutthroat (cutflagellum?) race to be the first to fertilize the egg.
2:36
Homologs and Gametes
Homologs and Gametes
Well I didn't even place but screw it i'm funny! do I come off a little porky piggish at the beginning? lol
0:34
Glorious Gamete Gauntlet
Glorious Gamete Gauntlet
Bocas Del Toro, Sept-12, 2006, 7:30pm, Montastrea complex releases packs of gametes which float to the surface, break apart, and the sperm and eggs disperse, while I swim through it all.
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Reproduction: A Story of Gamete Romance
Reproduction: A Story of Gamete Romance
BioIdol Submission 2011 We're practically tone deaf...but we had fun :) Lyrics: Re-re-reproduction It's so, it's so natural Sperm, egg Ooh la la I want to reproduce Re-re-reproduction It's so, it's so natural Sperm, egg Ooh la la I want to reproduce Oogenesis I want to make eggs Eggs...
4:09
Fertilisation of Mammalian Gametes
Fertilisation of Mammalian Gametes
This video outlines how a sperm fertilises an egg.
0:28
two dinoflagellate gametes merging
two dinoflagellate gametes merging
this video was created from still images taken as part of my final year project.
4:08
Gamete Formation: Independent Assortment vs. Linked Genes
Gamete Formation: Independent Assortment vs. Linked Genes
What kind of gametes (egg cells or sperm cells) are produced if a) two genes are located on different chromosomes (assort independently), or b) two genes are stuck (linked) on the same chromosome?
6:16
Preserving Endangered Gametes
Preserving Endangered Gametes
Pierre Comizzoli, a reproductive physiologist at the Smithsonian Conservation Biology Institute, talks about his efforts to rescue endangered species from extinction using in vitro fertilization as well as novel gamete preservation techniques.
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SuRROGATE (Society for the Rights of Gametes)
SuRROGATE (Society for the Rights of Gametes)
In light of recent Virginia legislation, SuRROGATE (Society for the Rights of Gametes) decides to propose their own legislation for the protection of potential human life. Starring: Townsend Hart as Stacy Kathryn Michael as Ruth Kristin Kirkley as Hilary Emilie Tweeddale as Clara Harriet the Cat as Herself Music: Stoptime Rag by Scott Joplin All other music by Jim Ivins Scripted and Edited by Kristin Kirkley Special thanks to... Andy and Emilie for the use of their living space. [No humans (potential or otherwise) were harmed in the making of this document... ] [We also did not harm the cat in any way...]
2:03
sea urchin gamete injection shedding.dv
sea urchin gamete injection shedding.dv
Watch male and female gametes come from Sea Urchins
0:36
Allomyces gametes interacting
Allomyces gametes interacting
Allomyces macrogynus female zoospore (center) releases the pheromone sirenin that the male (smaller) detects and swim in arcs until it reaches the source.
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Gametes releasing of Cypassis irregularis (radiolaria) under laboratory cultivation
Gametes releasing of Cypassis irregularis (radiolaria) under laboratory cultivation
(This movie is 6 times speed playing) A radiolarian species Cypassis irregularis is releasing a lot of gametes, pico-size cells (ca. 3 um in average). 18S rDNA sequences of these cells fell within those of typical radiolarian families. More details will be shown in the electric journal "Environmental microbiology Reports" by Kimoto, Yuasa and Takahashi" (2010, in press), Copyright: Dr. K. Kimoto, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
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BIOL346 L4.3 Fertility Awareness and the Aging Gamete
BIOL346 L4.3 Fertility Awareness and the Aging Gamete
Causes of human congenital anomalies at birth are investigated from the biological, behavioural and bioethical perspectives.
9:39
6. Model of gamete formation and meiosis (HSC biology)
6. Model of gamete formation and meiosis (HSC biology)
Covers the HSC biology syllabus dot point: "process information from secondary sources to construct a model that demonstrates meiosis and the processes of crossing over, segregation of chromosomes and the production of haploid gametes" Maintaining a balance module playlist: www.youtube.com Blueprint of life module playlist: www.youtube.com The search for a better health playlist: www.youtube.com
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5. Gamete formation and sexual reproduction (HSC biology)
5. Gamete formation and sexual reproduction (HSC biology)
Covers the HSC biology syllabus dot point: "explain the role of gamete formation and sexual reproduction in variability of offspring" Maintaining a balance module playlist: www.youtube.com Blueprint of life module playlist: www.youtube.com The search for a better health playlist: www.youtube.com