Problems #9-16 involve (the traits in this case) are examples of codominance cod

Question

Problems #9-16 involve (the traits in this case) are examples of codominance codominance and sex-linked traits. Remember that human blood groups Blood Type (phenotype Genotype AB I stands for confusion between the two dominant alleles. isoagglutination (another word for antigen). The use of "1" helps to avoid Rh Inheritance: In an oversimplification of the inheritance of the Rh (Rhesus) antigen, we can say that there are two alleles of the Rh gene: D for possessing the Rh antigen, and d for the absence of the antigen. The D allele is completely dominant; therefore a phenotypically Rh individual can have a genotype of DD or Dd. An Rh individual is homozygous recessive, dd. The inheritance of the Rh antigen follows simple Mendelian genetics. The Rh antigen is inherited independently from the ABO blood type trait. Question #11: One parent has blood type AB and the other parent has blood type O. What bloo types are predicted to occur among the children? Write out the genotypes of the parents Complete the Punnett square What is the probability of the parents having a child with type A blood?

Explanation / Answer

11) The genotype of parent with AB blood type - IAIB.
The genotype of parent with O blood type - ii.
Cross between IAIB X ii

Gametes formed IA and IB i and i.

Next generation

Total number of children = 4.

Children with blood type A = 2.

Children with blood type B = 2.

The blood types of children - A and B.

The probability of parents having a child with type A blood - 2/4 x 100 = 50%.

Parents IA IB i IAi(blood type A) IBi(blood type B) i IAi(blood type A) IBi(blood type B)

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