Answer: Crossing over
Explanation:
In meiosis, chromatids are made to exchange their genetic material during Prophase to allow the formation of offspring that are genetically different from their parents.
The process of exchange is called CROSSING OVER. And it occurs through a contact point known as Chiasma.
Answer:
The peripheral nervous system (PNS) has two components: the somatic nervous system and the autonomic nervous system. The PNS consists of all of the nerves that lie outside the brain and spinal cord
Explanation:
Answer:
In compare to eukaryotes,prokaryotes are morphologically simpler,more evolutionary primitive,less sensitive to physical environment.
Explanation:
Prokaryotes are unicellular organism which don't possess cell organelle like nucleus,mitochondria,Endoplasmic reticulum,golgi body, etc.
They are the first living organism in the primitive earth and the genetic components are located in the cytoplasm which is enclosed by cell membrane.
prokaryotes contain 3 domains that are Archaea, bacteria and eukarya.
The cytoplasm is enclosed by cell membrane.
Molecular studies have reveal that eukaryotes are evolved from prokaryotes.
Some prokaryotes bear long projection which helps them for locomotion,called as flagellum.This is present in gram positive and gram negative bacteria.
The system of scientific naming or nomenclature is use to identify an organisms worldwide. The system of naming of an organism is introduced by Carolus Linnaeus. The scientific name of any organism is written by its genus name and species name. This is called binomial system of naming. While writing the scientific name of an organism, the name of the genus written first with a capital letter and the name of the species is written second with a small letter. When typed scientific name is in italics and when it is hand written the genus name and the species are to be underlined separately.
In the given example, the scientific name of orange-barred sulfur butterfly is <em>Phoebis philea</em>. <em>Phoebis</em> is its genus name and <em>philea</em> is the species name.