If the O is recessive isn't safe to say that the child could not have O blood type and could only be an A?
2006-12-31 00:44:55 · 12 answers · asked by punky_power 1 in Science & Mathematics ➔ Biology
you are right. O is recerssive and hence, the child will have to have A blood group
2006-12-31 00:53:40 · answer #1 · answered by ? 3 · 0⤊ 0⤋
The child cannot be O+, the ova the mother produces contains the alleles either for A or O, the sperms the father produces can only have the allele for A, so the child must either be a AA, or a AO, 50% chance of both, since O is recessive, the child is definitely an A (AO or AA).
2006-12-31 00:49:03 · answer #2 · answered by josiahitsgoodtohavesomeself-ctrl 2 · 0⤊ 0⤋
A is dominant while O is recessive since in parental genotype, Group A is expressed. U can testify yourself that the child could only be A through genetic cross.
AO x AA
AA AA AO AO
2006-12-31 01:31:31 · answer #3 · answered by BrInGiToN 2 · 0⤊ 0⤋
genuinely. Blood kind A can genetically be the two AA or AO - one chromosome from each and each be sure. Blood kind B in addition. A and B are co-dominant and dominant to O. kind O is genetically OO - it is recessive, so somebody with AO blood could have blood kind A. Now, if 2 human beings AA and BB have a toddler, that toddler can not be O - it relatively is going to be AB. in spite of the undeniable fact that, if the mum and dad have been AO and BO, the toddler might desire to be AO, (provides as A), or BO, (provides as B), or AB, or OO. So sure, it relatively is relatively obtainable for kind-A and kind-B mum and dad to have a kind-O toddler.
2016-11-25 02:40:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Normally the answer to your question is NO! But In the case of a rare genetic condition called "Bombay Phenotype" the blood may test as O+ because it lacks A & B antigens.
2006-12-31 02:55:15 · answer #5 · answered by loligo1 6 · 0⤊ 0⤋
The child could not have an O blood type in this scenario. I would question the paternity.
2006-12-31 00:49:47 · answer #6 · answered by Nicole B 5 · 0⤊ 0⤋
The children of this cross can only be type A+
2006-12-31 01:41:22 · answer #7 · answered by ursaitaliano70 7 · 0⤊ 0⤋
Nope O gene is recessive, the dominant A gene is will mask over O gene. presence of + is due to rhesus found in other gene
2006-12-31 02:37:30 · answer #8 · answered by Danzzz 2 · 0⤊ 0⤋
As a general rule of theumb, the answers to these "is the mother a slut?" questions in genetics textbooks is "No!" Your question is exceptional, however...yes, the mother is a slut.
2006-12-31 02:06:23 · answer #9 · answered by ivorytowerboy 5 · 0⤊ 0⤋
AO + AA = AA or AO only
AO + AO = AA ,AO, OO(O)
BO + BO = BB,BO,OO(O)
2006-12-31 02:57:11 · answer #10 · answered by Comrad 2 · 0⤊ 0⤋