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when a foetus is formed in the womb, where or who does it get its blood from? is it from the father, the mother or from both of them?

2006-06-30 23:56:03 · 7 answers · asked by sayre 1 in Science & Mathematics Biology

7 answers

Since you may be from anywhere in the world, you spell fetus however the heck you like!

This answer from "Ask a Scientist" should answer your question.

"First of all, the baby makes its own blood. Once the baby begins to grow, it forms its own bones, skin, hair, etc. and also begins making blood. The
blood type (ie, A, B, AB, or O) is determined by both parents. Type A and Type B are both dominant, which means that if they are there, they will show up. Type O blood is recessive, which means that both parents have to give
the baby an O type gene for it to have type O blood. If the baby gets and O gene from one parent and a B gene from the other, it will have type B blood and the O is "hidden". If one gives a B and the other an A the baby will be type AB.
vanhoeck" (1)

Another great place to look is:
http://www.madsci.org/

Since they may be American, however, search their archives for "fetal blood." It's a great site, too.

2006-07-01 15:50:09 · answer #1 · answered by LazlaHollyfeld 6 · 0 0

FETUS IS THE AMERICAN AND ACCEPTED SCIENTIFIC TERM FOR FOETUS.
In the fetus, there is an opening between the right and left atrium (the foramen ovale), and most of the blood flows from the right into the left atrium, then into the left ventricle from where it is pumped through the aorta into the body. Some of the blood moves from the aorta through the internal iliac arteries to the placental arteries, and re-enters the placenta, where carbon dioxide and other waste products from the fetus are taken up and enter the mother's circulation.
SEE URL
HOPE THIS HELPS
Also don't forget like some of my students do>>the placenta is the only tissue in humens that is made from both the developing fetus and the mother.

2006-07-01 07:20:33 · answer #2 · answered by loligo1 6 · 0 0

The blood of the fetus comes from the dominant genes of the parents. In my family of 5 children, most of us have the same type blood as our mother while the rest are the same type as our father.

2006-07-01 07:11:59 · answer #3 · answered by DragonL 2 · 0 0

the foetus synthesises its own blood cells, by its liver. this is dependent upon gene expression, which in turn, is inherited from both its mother and father, determining the blood group.

2006-07-01 07:21:21 · answer #4 · answered by sillyme 1 · 0 0

The blood type of a fetus is genetic. Depending on mom and dad's blood, the child's blood is created. Do a punnett square.

2006-07-01 07:00:16 · answer #5 · answered by Billy C. 3 · 0 0

Sometimes it follows the father's type, sometimes the mother's.

2006-07-01 07:59:30 · answer #6 · answered by Me in Canada eh 5 · 0 0

do punnett square.the childs blood group matches either of the parents.

2006-07-01 07:52:05 · answer #7 · answered by piya 1 · 0 0

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