Pregunta
A child who has type O blood has parents with type A and type B blood. How is this
possible?
possible?
Ask by Reyes Campbell. in the United States
Mar 26,2025
Solución de inteligencia artificial de Upstudy
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A child with type O blood can have parents with type A and type B blood if both parents are heterozygous (genotype
Solución
- The ABO blood type is determined by the alleles
, , and . - A child with type O blood has the genotype
. - For a child to have genotype
, each parent must contribute a recessive allele. - The parent with type A blood can have the genotype
(heterozygous), and the parent with type B blood can have the genotype (heterozygous). - When they have a child, the possible genotypes from these parents are:
-
→ Type AB -
→ Type A -
→ Type B -
→ Type O
-
- Therefore, the child with type O blood (
) inherited the allele from each parent.
Thus, the child’s type O blood is possible because both parents are heterozygous and contributed the recessive allele
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Simplifique esta solución The Deep Dive
A child with type O blood can indeed have parents with type A and type B blood due to the genetics of blood types. Each parent carries two alleles determining their blood type. For a child to have type O blood, they must inherit an O allele from each parent, which means that both parents must carry at least one O allele in their genotype. Thus, a type A parent could be either AA or AO, and a type B parent could be either BB or BO. If they are both carriers of the O allele, it opens up the possibility for an OO child!
In terms of genetic probabilities, let’s break it down. The combinations from an AO parent (A and O alleles) and a BO parent (B and O alleles) will yield offspring with either A, B, AB, or O blood types. With a 25% chance of being OO, this creates that delightful scenario where a type O child emerges, highlighting the wonders of genetic inheritance and the surprises it can bring!
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