Use the three ABO alleles to infer genotypes, phenotypes and possible outcomes of parental crosses.
Tę umiejętność sprawdzają 4 zadania wzorowane na arkuszach IB z lat 2022–2023.
A model population survey records these ABO phenotypes. Which conclusion is supported? Blood group | Percentage O | 49 A | 34 B | 13 AB | 4 A. Only the AB group can contain heterozygous individuals B. Most people have the codominant AB phenotype C. The three…
The model below summarizes ABO antigens on red blood cells and antibodies in plasma. Ignore all other blood-group systems. Which conclusion about a red-cell transfusion follows? Group | Red-cell antigens | Plasma antibodies A | A | Anti-B B | B | Anti-A AB | A…
The model below summarizes ABO antigens on red blood cells and antibodies in plasma. Ignore all other blood-group systems. Which conclusion about a red-cell transfusion follows? Group | Red-cell antigens | Plasma antibodies A | A | Anti-B B | B | Anti-A AB | A…
A family includes children with blood groups O, A and AB. Which parental genotype pair can produce all three phenotypes under the usual ABO model? A. IᴬIᴬ and Iᴮi B. Iᴬi and Iᴮi C. IᴬIᴮ and ii D. Iᴬi and ii
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