Sally has blood type B and has a child with blood type O. In a paternity test which blood type would exclude a man as the father of the child? Group of answer choices - O - Only A - A or B - Only AB - Only B
Genes are the specific codes of these amino acids which produces a protein and alleles is the variants of these gene. For suppose there is a gene which determine the height of a pea plant and alleles are the variants types tall and dwarf.
In diploid organisms there is place for fitting of two alleles even through there are 3 or 4 alleles for the genes.
Blood type is determined by the ABO blood typing genes. These are 3 sets of genes in which A and B genes are dominant and O is recessive.
A blood type people have A antigen on the RBC cell surface.
B blood type people have B antigen on the RBC cell surface.
AB blood type people have A antigen and B antigen on the RBC cell surface.
O blood type people have NO antigen (antigen is absent) on the RBC cell surface
Which represent that the characteristics of the blood group in humans
- Multiple alleles: there 3 different alleles A, B and O
- Dominant: A and B alleles are dominant over the O
- Co-dominant: A and B alleles are co-dominant alleles
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