Which area is cold all year and experiences low precipitation?

The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert.

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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