The Crossing Over only occurs in the meiosis on prophase I and metaphase I
Answer:
The nektonic organisms are those marine organisms that are found in almost every depth. These can move freely from one place to another in the ocean body due to its ability to swim. For example, Turtles, sharks, Fishes, and dolphins.
The planktonic organisms are passive swimmers, as they can move along with the ocean currents and are mostly found in the upper portion of the ocean body. For example, Diatoms and Rotifers.
The benthos is the bottom-dwelling organisms that cannot swim. For example, Bivalves, Corals and Sponges.
The nektonic organisms are different from the planktons and the benthos because the nektons can easily swim. They are constructed with such body parts that allow them to swim and migrate from one region to another region within the ocean water body. Whereas the planktons and the benthos cannot migrate easily and are considered as sessile organisms.
The primary role of DESMOSOME is to blind animal cells together. It is the formation of a structure from protein plaques in the cell membranes linked by filaments. This links to a the protein that is attached to the cell surface adhesion.
The following statements refer to genetic factors: Joey has green eyes, Joey is very tall and Joey has brown hair. Hope this helps!
