How to figure blood type from parents. Find out if your baby will be in blood group a b ab or o with the blood type calculator. Simply fill in the required fields of the blood type calculator by selecting the blood type of the childs mother and father. So the childs blood type depends on the alleles that the parents carry 5.
The blood type of a child depends on the blood type of both the parents. Similarly bo is type b aa is type a bb is type b oo is type o and ab is type ab. So allele a combined with allele o is type a.
Here are possible blood types for a child based on the blood types of the parents. Naturally we encourage you to use the blood type calculator instead of calculating the probabilities manually. Combine the column with the row to find the possible blood types.
The abo blood type of the father if the blood type of the child and the mother are known bottom chart. After clicking the calculate button the blood group calculator will display the probability of your childs future blood group in the form of percentages. Each biological parent donates one of their two alleles to make up the childs blood group.
For example if your father has type ab blood enter a to the left the first column and b to the left of the second column. If both parents have type a blood then the alleles could be aa or ao thus the allele a frequency is 75 allele o frequency is 25 for both parents. Label the two rows based on your fathers blood type.
The abo blood type of the child when the blood type of the father and the mother are known top chart or. If the rh antigen is present then the blood is rhd positive. The a and b are dominant and o is recessive.
The charts below can assist you to determine either.