Answer:speciation
Explanation: Speciation is the evolutionary process by which populations evolve to become distinct species. There are four geographic modes of speciation in nature, based on the extent to which speciating populations are isolated from one another these are allopatric, peripatric, parapatric, and sympatric. Speciation may also be induced artificially, through animal husbandry, agriculture, or laboratory experiments.
The answer is A:
The SUGAR-PHOSPHATE CHAINS form the sides, and the BASE PAIRS form the rungs
This would be transcription. You transcribe the DNA into mRNA.
The two substances needed in this situation are:
potato extract and catechol<span />
The sewing needle should float in the water if placed on a horizontal angle if I remember properly.
I hope this helps in some way.
