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...

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...

Prophase I of meiosis, diakinesis substage in a diploid lily pollen mother cell. Nucleoli are not visible. The 24 chromosomes have condensed, and are each paired with their homolog to form the 12 bi...

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...

Lilium longiflorum (Easter Lily) pollen. This is a thin optical section through the center of the desiccated stage of the mature pollen showing autofluorescence or harmonic generation of intrinsic st...

Scanning electron micrograph of Lilium longiflorum (Trumpet Lily) pollen. These specimens have been acetolyzed to remove cytoplasm and pollenkit in order to reveal the intricate wall structure. This i...

Scanning electron micrograph of Lilium longiflorum (Trumpet Lily) pollen. These specimens have been acetolyzed to remove cytoplasm and pollenkit in order to reveal the intricate wall structure. This i...

Lilium longiflorum (Easter Lily) pollen. This is a thin optical section through the center of the desiccated stage of the mature pollen showing autofluorescence or harmonic generation of intrinsic st...

Scanning electron micrograph of Lilium longiflorum (Trumpet Lily) pollen. These specimens have been acetolyzed to remove cytoplasm and pollenkit in order to reveal the intricate wall structure. This i...

Lilium longiflorum (Easter Lily) pollen. This is a thin optical section through the center of the desiccated stage of the mature pollen showing autofluorescence or harmonic generation of intrinsic st...