The students used a microscope to study cells in a sample of pond water. The results are shown in the
table. According to the table, which protist shares
the most characteristics with animals?

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.

Ihave a question. diplontic animals usually produce both eggs or sperm which are :