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Cell Process
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University of California, San Diego
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Reproductive Processes (409 results)
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CIL:54560
NCBI Organism Classification
Lilium longiflorum
Biological Process
meiosis
Cellular Component
nucleus
Post meiotic formation of a tetrad. Each of the four cells produced by meiosis are now separated from each other by cell walls. Each of the four nuclei contain the haploid number of chromosomes.Once...
CIL:54549
NCBI Organism Classification
Lilium longiflorum
Biological Process
meiosis
Cellular Component
nucleus
4 Prophase I of meiosis, substage pachytene in a diploid lily pollen mother cell. The nucleoli are once again round, two are visible. All of the homologous chromosome regions are fully paired, appe...
CIL:54551
NCBI Organism Classification
Lilium longiflorum
Biological Process
meiosis
Cellular Component
nucleus
Prophase I of meiosis, diakinesis substage in a diploid lily pollen mother cell. One bivalent is shown. It has 6-8 crossovers (also called chiasmata). The long arrows point at definite chiasmata; ...
CIL:54553
NCBI Organism Classification
Lilium longiflorum
Biological Process
meiosis
Cellular Component
nucleus
Metaphase I of meiosis, polar view, in a diploid lily pollen mother cell. Because of the polar viewpoint, the metaphase plate is not apparent but the 12 bivalents are very clear as are the regions o...
CIL:54559
NCBI Organism Classification
Lilium longiflorum
Biological Process
meiosis
Cellular Component
nucleus
Telophase II in a diploid lily. The segregated chromomosomes on the left side of the micrograph are a little in advance of the ones on the right side . The nuclei on the left are reforming their nucl...
CIL:11424
NCBI Organism Classification
unclassified Insecta
Biological Process
spermatogenesis
Cellular Component
mitochondrion
Figure 236 from Chapter 7 (Mitochondria) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Fusion of mitochondria during insect spermiogenesis results in the formation of a structure called the nebenkern...
CIL:39036
NCBI Organism Classification
Mus musculus
Biological Process
ovarian follicle development
Cellular Component
zona pellucida
A photomicrograph of a stained semi-thin section of mouse ovary, showing a maturing Graafian follicle. The ovary contains many follicles that contain immature oocytes (egg cells). The follicle is impo...
CIL:9065
NCBI Organism Classification
Nephrotoma suturalis
Biological Process
spindle assembly involved in male meiosis II
Cellular Component
cytoskeleton
The events of meiosis I in a living insect spermatocyte beginning at metaphase with bivalents at the spindle equator, followed by anaphase onset, chromosome segregation and the start of cytokinesis. T...
CIL:9059
NCBI Organism Classification
Nephrotoma suturalis
Biological Process
spindle assembly involved in male meiosis II
Cellular Component
spindle
The events of meiosis II in a living insect spermatocyte beginning at the completion of prophase II through the comletion of cytokinesis. Testes from the Crane fly Nephrotoma suturalis were observed w...
CIL:39228
NCBI Organism Classification
Psophus stridulus
Biological Process
spermatogenesis
Cellular Component
nuclear chromosome
Time lapse movie of meiosis II in spermatocytes of the Locust Psophus stridulus showing two sequences that include metaphase and anaphase. This is a historic movie made in the early 40s by Kurt Mich...
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