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Hi, Luckily enough I was doing a project on this and I found this question and thought yes! I only have three but I am sure there are loads more! 1.yolk sac (part of the embryo when developing) 2.Yellow Marrow. This is a tissue of the skeletal system which stores lipids as energy reserves for bone 3. Y chromosome - The Y chromosome is the sex - determining chromosome in most mammals, including humans.

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12y ago

What else can I help you with?