: Spot, the giraffe, is not a clone of his father. He inherited DNA from both of his parents. Chromosomes are condensed units of DNA. If Spot has 30 chromosomes, you would expect that Spike would have inherited chromosomes from his mother andchromosomes from his father. A 30 B 25 C 20 D 15

I would say the answer for both would be D, which is 15. As normally you would get half of your total amount from each parent.

I hope that helped! :D

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explanation:

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organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.