Lab Activity: Blood Type Pedigree Mystery Mystery in Wexford
What is a pedigree and how can it be used to depict blood type inheritance patterns within a family?
A pedigree can be used to depict the blood type inheritance pattern within a family. Depending on the question, multiple interpretations are made using blood type pedigrees. The dominant IA and IB alleles outnumber the recessive I allele. IA is stronger than . The individual exhibits antigens of type A. IB dominant over . The person shows B type of antigens. The recessive allele is Antigens are not present in the individual. It is codominant for IA and IB. Both antigen types, A and B, are present in the individual.
Answer:
A pedigree is a visual portrayal of a family's familiar history over the years. This illustration makes use of many symbols and numbers to trace the lineage of a certain characteristic, such as blood type. A pedigree can help in understanding how genes are passed down from one generation to the next.
When analyzing a pedigree, it is important to know that geometrical figures are used to portray people. Men are represented as squares, while circles represent women. Unborned people are rhombic in shape. People can be recognized by their names, numbers, or other characters. Empty figures represent those who are healthy, normal, or unaffected by genetic traits, while those affected or mutated are shown as solid black figures.
Each generation in a pedigree is identified with a Roman numeral, indicating its place in the family tree. By studying pedigrees, researchers can track the presence of specific genetic traits through multiple generations and gain insights into inheritance patterns and genetic diseases.