AP PSYCHOLOGY

Detailed explanation-1: -An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm cell.

Detailed explanation-2: -Generally, it’s called an embryo from conception until the eighth week of development. After the eighth week, it’s called a fetus until it’s born.

Detailed explanation-3: -embryo, the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end of the seventh week following conception; from the eighth week the unborn child is called a fetus. first stages of human development.

Detailed explanation-4: -It is the stage of development between the zygote or fertilized egg and the newly formed offspring, formed by repeated mitotic division of the zygote. It is formed due to the fusion of male and female gametes through fertilization or syngamy.