The biological organisms resulting from the development of the zygote up to eight completed weeks after fertilization are called what?

The biological organisms resulting from the development of the zygote up to eight completed weeks after fertilization are called what?

• A. Embryo
• B. Embryo bank
• C. Embryo transfer (ET)
• D. Ejaculation

Answer: (A)

From fertilization until about eight weeks, the developing human is called an embryo. This naming marks the early stage when basic body structures begin to form, before growth switches to later development. After eight weeks, the same organism is typically referred to as a fetus. The other terms don’t describe this developmental stage: an embryo bank is a storage facility for embryos, embryo transfer is a reproductive technology procedure, and ejaculation is the release of semen.

From fertilization until about eight weeks, the developing human is called an embryo. This naming marks the early stage when basic body structures begin to form, before growth switches to later development. After eight weeks, the same organism is typically referred to as a fetus. The other terms don’t describe this developmental stage: an embryo bank is a storage facility for embryos, embryo transfer is a reproductive technology procedure, and ejaculation is the release of semen.