Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The homozygous recessive phenotype has sickle shaped red blood cells that cause anemia and often death if untreated. If an unaffected father and mother move to the United States from Sub-Saharan Africa and several of their offspring have sickle cell anemia, what do we know about both parents' genotypes? One is homozygous recessive, the other is heterozygous They are both heterozygous They are both homozygous recessive One is homozygous dominant, the other is heterozygous
Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The homozygous recessive phenotype has sickle shaped red blood cells that cause anemia and often death if untreated. If an unaffected father and mother move to the United States from Sub-Saharan Africa and several of their offspring have sickle cell anemia, what do we know about both parents' genotypes? One is homozygous recessive, the other is heterozygous They are both heterozygous They are both homozygous recessive One is homozygous dominant, the other is heterozygous
Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter19: Introduction To Genetics
Section: Chapter Questions
Problem 9CT
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![Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The
homozygous recessive phenotype has sickle shaped red blood cells that cause anemia and often
death if untreated.
If an unaffected father and mother move to the United States from Sub-Saharan Africa and
several of their offspring have sickle cell anemia, what do we know about both parents'
genotypes?
One is homozygous recessive, the other is heterozygous
They are both heterozygous
They are both homozygous recessive
One is homozygous dominant, the other is heterozygous](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1170b433-187b-4668-897b-fec6b7f466f9%2F211a2810-6558-4add-a1b3-359a7a971544%2Foptyxwi_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The
homozygous recessive phenotype has sickle shaped red blood cells that cause anemia and often
death if untreated.
If an unaffected father and mother move to the United States from Sub-Saharan Africa and
several of their offspring have sickle cell anemia, what do we know about both parents'
genotypes?
One is homozygous recessive, the other is heterozygous
They are both heterozygous
They are both homozygous recessive
One is homozygous dominant, the other is heterozygous
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