Can two parents whose blood type is O+ have a child whose blood type is O-?
2007-01-11 06:53:31 · 8 answers · asked by angelofdreams19881 3 in Science & Mathematics ➔ Medicine
Yes.
The following scheme could be happening:
....D d
D DD Dd
d Dd dd
This means that if both parents have both a recessive and a dominant Rh factor gene, then their genetic crossing could result in either Pure Dominant (DD), Pure Recessive (dd), or Mixed (Dd) offspring.
In other words, they could have either positive or negative blood type children. They are more likely to have positive blood type children (75%) but negative is also possible (25%).
If you're interested, look up genetics, specifically blood type and Mendel (he's the monk that discovered it.)
***The thing that O+ or O- parents can't do is have children with A, B, or AB type blood. They will have O type offspring.****
2007-01-11 07:02:38 · answer #1 · answered by Jess4352 5 · 3⤊ 0⤋
Absolutely. As stated above - the "negative" gene is recessive, the "postive" gene is dominant. Two people with O+ blood, if they are both carrying the reccessive "negative" gene- each can pass the recessive on to his/her offspring, producing a child with two recessive genes = O- blood type.
2007-01-11 15:21:46 · answer #2 · answered by Wondering 3 · 1⤊ 0⤋
Kudos for Jaime S' answer.
2007-01-11 22:17:24 · answer #3 · answered by Aramis Jack 3 · 0⤊ 1⤋
yes it can. depends on their genotype. if they are O±, then they can have all the combinations: O++, O± or O--
2007-01-11 15:06:50 · answer #4 · answered by sam 2 · 3⤊ 0⤋
No... My brother's girlfriend is a nurse, I asked her and she said no....
2007-01-11 15:01:04 · answer #5 · answered by sheepishbiribiri 2 · 0⤊ 3⤋
my blood type is RED! :) :)
2007-01-11 19:44:56 · answer #6 · answered by wind it up 4 · 0⤊ 3⤋
No
2007-01-11 15:00:13 · answer #7 · answered by Jen 1 · 0⤊ 2⤋