Explain the phenomenon of incomplete dominance in sickle cell inheritance
What will be an ideal response?
Answer: Incomplete dominance occurs when there is a dominant-recessive pair of genes and the phenotype is affected mostly by the dominant gene, but the recessive gene also becomes expressed partially. In sickle cell anemia, a person inherits two recessive genes for the sickle-cell trait and their blood cells are disk-shaped rather than round, causing clogging and a number of problems, such as pain. If the person only inherits one recessive gene for the sickle cell trait, they will not have sickle cell anemia, but some of their blood cells will be misshaped. This condition causes resistance to malaria, an often fatal disease that is common in Africa. It would be adaptive to carry this recessive trait in Africa, so this explains the higher prevalence of sickle-cell diseases among people of African heritage.
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Research participants do not need to be told if deception is part of an experiment
Indicate whether the statement is true or false