Answer:
<em>Hello There the Correct answer is A. Variations.</em>
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
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a transform boundary because the two plates pass each other in that same plane and the blocks of rock move in opposite horizontal directions .
Answer:
double helix
Explanation:
The double helix is a description of the molecular shape of a double-stranded DNA molecule. In 1953, Francis Crick and James Watson first described the molecular structure of DNA, which they called a "double helix," in the journal Nature.
Uhhhh it i think its flowers according to bio