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is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division until birth, hatching, or germination. In humans, it is called an embryo until about eight weeks after fertilization (i.e. ten weeks LMP), and from then it is instead called a fetus.
What else can I help you with?
An ebryo at 4 weeks measured at 7 weeks?
The measurements of an embryo/fetus are fairly accurate.. Especially within the first 20 weeks. It's probable that you estimated how far along you were wrong.
What special ability do stem cells in an ebryo have?
Stem cells in an embryo have the unique ability to differentiate into any cell type in the body, a characteristic known as pluripotency. This allows them to contribute to the formation of various tissues and organs during development. Additionally, they have the capacity for self-renewal, meaning they can divide and produce more stem cells, maintaining their population throughout the organism's growth. This versatility makes them crucial for early embryonic development.
