Week 21 How will the evolution be if it is a girl? And if it is a boy?
The baby is very active at this stage, it does not stop moving. In addition, breathes and swallows amniotic fluid preparing to breathe and digest when born. If you’re going to have a girl, their ovaries will have more than 6 million ovum’s. At birth, that amount will drop to 1 or 2 million, which is the total amount of ovum’s the child will have for the rest of her life. Semen, by contrast, is produced throughout the reproductive life of men.
So far, the liver and spleen were responsible for producing red blood cells. From week 21, the bone marrow has developed enough and now it will be responsible for the production of red blood cells.
The size of the baby is a bit more than 18 centimetres long and it weighs roughly 300 grams.