Want this question answered?
A female fetus with an a y chromosome is what makes it develop differently from a male fetus.
It will develop walking.
The fetus' heart beats eighteen days after conception.
The eyelashes of a fetus develop around week 22 of pregnancy.
The female fetus has a Y chromosome while the fetus only has two x chromosome.
The Gonads
lungs
The Heart.
Heamolytic disease of the newborn or Erythroblastosis Fetalis
A false pregnancy is a condition that is called psudocyesis. The condition is rare, though it can happen in many women today. Perhaps the worst damage that this condition causes is the emotional and psychological toll it takes. Women either are happy to believe that they are pregnant or they are worried about pregnancy. In all situations, it is important to know what false pregnancy is. The condition is one that mimics pregnancy completely except for the actual fetus.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
UterusD