Dividing pollen cell,stereoscopic SEM

Numéro d’image : 11708516
Dividing pollen cell,stereoscopic SEM
Dividing pollen cell. Coloured stereoscopic scanning electron micrographs of a section through a pollen mother cell from a spiderwort (Tradescantia reflexa) flower,during the prophase (II) stage of meiosis (gamete formation) - showing: chromosomes (yellow),nuclear membrane (red),cytoplasm (violet) and the cell wall (blue). During meiosis four daughter nuclei are formed from one parent nucleus after two stages of nuclear division. Meiosis occurs only in the sex cells (gametes). At prophase the chromosomes,which contain two identical chromatids and are made of deoxyribonucleic acid,condense into defined units,allowing organised and equal segregation into daughter cells
Licence : Droits gérés
Crédit: Science Photo Library / PROFESSOR T. NAGURO
Taille de l’image : 5044 px × 2114 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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