Is it possible to have 3 children,1 boy and 2 girls all with O+ blood group. If there parents have: Dad B - and Mom O+
make a cross n tell me.. Plz
Thanks!
2006-07-18 04:45:22 · 8 answers · asked by Dr. Joe 3 in Science & Mathematics ➔ Biology
Yeah
2006-07-18 04:49:26 · answer #1 · answered by Rara 6 · 0⤊ 0⤋
Mom is O+ so her genes are O,O and has "+"
Dad is B- so his genes are either B,B or B, O and "-"
To have 3 children with O+ which IS possible the father's O would be the other side given to children so kids would be O,O and blood type would come out physically as O+.since mother would give the "+"
A+B are CO-dominant traits and O is recessive so any O is O,O
- vs + is RH factor and + is dominant so any + give you RH factor
now for any kid to be O blood dad must be B,O which gives each child a 50% chance to be O blood and mother is "+" so kid would have the RH factor.
It is very possible if a little against odds than one kid is not B+
2006-07-18 11:53:17 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Yes.
Most likely mom is O O and hands each kid one of the O chromosomes
Dad has to be B O which will show him as B, and the chances are not against him fathering multiple kids without passing the B chromosome. Blood type is usually not related to gender.
The chance of having more kids without the B chromosome gets smaller with each additional kid, but there may be additional factors that make it hard to pass the blood type.
The Rhesus factor tells the same story only with much higher probability. Mom is either - + or ++. In the first instance, there is the 50% chance of each kid receiving the + chromosome (dad has to be - - to show - and cal pass only - on) The + dominates and the kids will be + too. If mom is ++ it'll be near impossible for the kids to be -.
Foor bloodgroups (in a nutshell)
O: Person has OO genes
A: Person has either AA or AO genes
B: Person has either BB or BO genes
AB: Person has AB genes.
All parents pass only one gene to their kids.
Rhesus Factor, same deal just on identifier for bloodtype,
-: Person has no + genes (--)
+: Person has one or two + genes (++ or +-)
2006-07-18 12:02:26 · answer #3 · answered by Don't look too close! 4 · 0⤊ 0⤋
its possible but unlikely
.... O O
B BO BO
O OO OO
If the dad is heterozygous B and O recessive, theres a 50% chance that the each kid will be O blood type. As for the RH factor, if the mom is homozygous + dominance then all kids will have the + factor
And BTW, O is a recessive trait. It represents the absence of any blood type antigen
2006-07-18 11:51:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Only if Dad is heterozygous and is carrying a gene for type O
2006-07-18 11:53:23 · answer #5 · answered by Waltjh 2 · 0⤊ 0⤋
O+ is the most common blood type. The genes for it are probably dominant.
2006-07-18 11:50:23 · answer #6 · answered by voxwoman 3 · 0⤊ 0⤋
yes. if the dad has heterozygous B (b,o) blood.
2006-07-18 12:45:41 · answer #7 · answered by spicy44 2 · 0⤊ 0⤋
yeaaaaaaaaaaaaaaah
2006-07-18 11:55:05 · answer #8 · answered by sahi 2 · 0⤊ 0⤋