A pollen grain s size shape and texture are species-specific adaptations to dispersal mechanisms stigma morphology and environmental conditions All are morphological characters that can be useful in phylogenetic studies ...

Unlike the other groups discussed in this section, the euglenoids typically have several mitochondria.

The pink dots at the end of each DNA strand in these duplicated chromosomes are telomere sequences.

A cone snail Conus geographus engulfing a fish with its funnel-shaped mouth When surrounded by the snail s mouth a fish becomes passive suggesting that the snail releases some sort ...