An organism in the early stages of its development is an embryo.
I believe it's called pedology, which is the study of children's behavior and development
A person who always has negative thoughts may be referred to as pessimistic or having a negative outlook on life.
A person who only sees the negative in others may be called critical, judgmental, or pessimistic.
The principle you are referring to is called Cephalocaudal development. It states that growth and development occur in a direction from the head down to the feet, with control and coordination of the head and neck developing before the extremities.
taratogens or something spelled like that
fetus
embryonic
embryonic
First Stage: The first two weeks after conception are known as the Germinal stage. Second Stage: The next six weeks of development are known as the Embryonic stage. Third Stage: The remainder of prenatal development is known as the Fetal stage.
The period of prenatal development where major organs start developing is called the embryonic period. This stage typically occurs from about week 4 to week 8 after fertilization. This is a critical period for organ development and any disruptions during this time can lead to significant birth defects.
Transferral agents
The first 2 weeks of prenatal development, from conception until the fertilized egg implants itself in the wall of the uterus, is known as the germinal stage. This stage is characterized by rapid cell division and the formation of the blastocyst.
The embryo period is considered the most important in prenatal development because this is when the basic body structures and organs are formed. Any disruptions or abnormalities during this period can have long-lasting effects on the health and development of the fetus. It sets the foundation for the remainder of the pregnancy and beyond.
You do not "enter" the perfect prenatal status. There is simply no such thing to enter by any form or definition. There are however vitamins called "Perfect Prenatal".
Fetus
fetus