Una pieza de roca áspera. I'm only guessing <span />
Your answer is sexual reproduction. Sexual reproduction is when two distinct types of reproductive cells known as gametes fuse together, involving female's egg and male's sperm.
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Answer:
Embryo cell or totipotent cell
Explanation:
All organisms during their embryonic stage also known as totipotent cells are composed of cells that are identical in structure and function. These cells can differentiate at a later stage and have the potential to become any cell i.e heart cell, eye cell etc. Embryo is thus just a mass of unspecialized cell which undergo differentiation to then convert into pluripotent and form tissues and hence the organ.