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What kind of receptor do our eyes use to detect light?
Ectoderm
The outermost layer of cells or tissue of an embryo in early development, giving rise to the skin and nervous system.
Prenatal Development
The progression of maturation and evolution inside the uterus from the moment of conception until the time of delivery.
Germinal
The initial stage of prenatal development that spans from conception to the first two weeks, characterized by rapid cell division and the establishment of the embryo.
Embryonic
Pertaining to the earliest stage of development in multicellular organisms, following fertilization and prior to becoming a fetus.
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