Despite the response to the "blood type" question any Obgyn will tell you that the father determines the baby

Question

...bloodtype. Im will be a first time father in a few months give me a break.

Answer 1

Wrong. Here is how it works:

http://www.biology.arizona.edu/Human_Bio/problem_sets/blood_types/inherited.html

If your OBGYN really told you differently, you need to find a new one.

Answer 2

Only the sex of the child is determined by the father. The bloodtype is a combination of both mother and father.

I think you may have misunderstood what the you've heard. A blood typing test can eliminate someone as the father with 100% accuracy and can include someone as the POSSIBLE father.

Answer 3

This isn't a question, but I'll answer anyway.

Blood type is not a sex-linked trait. That is, both parents pass on genes for blood type, and one or both genes may be expressed.

Here's a list of possible inheritance:
Both parents O: offspring will be O
One parent O, one parent A: offspring may be O(50% chance) or A(50% chance)
One parent O, one parent B: offspring may be O(50%) or B(50%)
One parent O, one parent AB: offspring may be A(50%) or B(50%)
Both parents A: offspring may be O(25%) or A(75%)
One parent A, one parent B: offspring may be O(25%), A(25%), B(25%), or AB(25%)
One parent A, one parent AB: offspring may be A(50%), B(25%), or AB(25%)
Both parents B: offspring may be O(25%) or B(75%)
One parent B, one parent AB: offspring may be A(25%), B(50%), or AB(25%)
Both parents AB: offspring may be A(25%), B(25%), or AB(50%)

For Rh factor, if both parents are Rh-, the offspring will be Rh-. If either or both parents are Rh+, the offspring will be Rh+.

Congratulations on becoming a father!

EDIT:
Sorry, I had a brain fart on the Rh factor determination. That's all wrong. The following is correct:

If one or both parents are Rh+ homozygous: offspring will be Rh+.
If both parents are Rh+ heterozygous: offspring may be Rh+(75%) or Rh-(25%).
If one parent is Rh+ heterozygous and the other is Rh-: offspring may be Rh+(50%), or Rh-(50%).
If both parents are Rh-: offspring will be Rh-.

Sorry about the mistake.

Answer 4

I thought this, too, but after the "blood type" question, I researched it, and found that the blood type is determined by both parents' genetics combined, as are all other genetic traits. Who can we believe?(*_*)

Answer 5

congratulations. I didn't know that about blood type. I am b neg dad is o pos. son is o neg. I thought it was both parents.

Answer 6

maybe you shouldn't believe everything your told