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).
Hope it helps!
Answer:
the selected one is the correct one
Explanation:
<span>Females have two X chromosomes in their cells, while males have one X and one Y chromosome. Mitosis; before it divides it replicates & meiosis; sex cells have half the amount of chromosomes that a normal cell has so when they join another, there are 46 chromosomes in the cell.</span>
Animals memories are very good especially Dolphins. Dolphins Have Longest Memories in Animal Kingdom. Marine mammals can remember their friends after 20 years apart, study says. Bottlenose dolphins (pictured in the Caribbean) have amazing memories, a new study says. Sorry, elephants: Dolphins have taken the top spot for best memory, at least for now.Aug 6, 2013
