What is compacted dna wrapped around proteins called? what is at the center, connecting the sister chromatids?

Which statement describes characteristics of planarians? a they live in oceans, are parasites, and reproduce only sexually. b they live in fresh water, are parasites, and reproduce only asexually. c they live in oceans, are free living, and reproduce sexually and asexually. d they live in fresh water, are free living, and reproduce sexually and asexually.

This rapid change in species that rarely leaves behind fossil evidence is referred to as

The rate of speciation is most likely to increase when