In humans blood type is determined by the a, b, and o alleles, the a and b alleles are codominant to each other and dominant over the o allele. an individual with the ao genotype and an individual with the bo genotype can produce offspring with which of the following phenotypes?
1.) a, b, or o only
2.) a or b only
3.) a, b, ab, or o
4.) o only
!

Alleles are defined as the alternative forms of gene, which are found on the same loci on a chromosome. The individual with AO and BO genotype will produce offspring with genotype:

3.) A, B, AB, or O

Alleles are the two or more genes that are present on the same locus of chromosome. In the given question, it is given that:

The genotype of the offspring can be A, B, AB, or O. It is due to the co-dominance of alleles. Co-dominance is defined as the relationship between two variants of the gene. In co-dominance, both the alleles are expressed and observed in the phenotype. Thus, the offspring can have any of the blood types.

Therefore, the offspring can posses A, B, AB, or O blood group due to co-dominance of alleles.

To know more about co-dominance and alleles, refer to the following link:

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An Individual with AO genotype and an Individual with BO genotype will produce an offspring with ; ( 3 ) A, B, AB, or O

Given that the alleles A and B are codominant to each other and dominant to allele O, this means that alleles A and B can be seen and expressed in a phenotype while allele O is also dominant but becomes recessive when paired with either A or B.   while  

Phenotype with allele O is seen and expressed when not paired with any dominant allele. therefore Individuals with AO genotype and BO genotype will produce offsprings with  A, B, AB, or O  blood groups due the codominance factor possessed by alleles A and B.

Hence we can conclude that An Individual with AO genotype and an Individual with BO genotype will produce an offspring with ; ( 3 ) A, B, AB, or O

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To know more about co-dominance and alleles, refer to the following link:

the circled areas are referred to   as sunspots.   the sunspots are cooler than the   surrounding area.

sunspots are temporary phenomena on the photosphere of the sun that appear visibly as dark spots compared to surrounding regions. they correspond to concentrations of magnetic field flux that inhibit convection and result in reduced surface temperature compared to the surrounding photosphere.