There are four general conditions that must be met for natural selection to occur, these are: variation among organisms of the same species, large production of offspring, variation in individual fitness among members of the same species and variation in heredity. So from the question given above, the conditions that are required for natural selection are option A, B AND D.
Generally speaking, identify the overall structure of the cell membrane. Hydrophilic is water loving/attracting. The portion of the bilayer that is hydrophilic is the phospholipid of the cell membrane head. ... The portion of the bilayer that is hydrophobic is the phospholipid of the cell membrane tails.
Answer: Codons
Explanation: Three neighboring nucleotides form a unit known as the codon.
Meningitis is the inflammation of the meninges covering the brain and spinal cord. One of the physical symptom is Kernig's sign. It is done by letting the person to lie flat and flexing the thigh and hip to 90 degrees. If the leg cannot be straighten then it means it is a neurologic positive sign for Meningitis.
I believe the appropriate organization found in both cases would be a population. As a population consists of a single species found within a particular area and capable of interbreeding.