Question

Codominance and / or mixed dominance, more than one trait 12) 4 pts. Blood types in humans are caused by a combination of two of three possible alleles, A, B, and i. The i allele is recessive and when an individual is homozygous for this allele, they have type O blood. Blood type A may be due to a homozygous condition, or to an A and i allele. Blood type AB is caused by having a copy of both the A and B alleles. Blood type B is due to being homozygous or heterozygous with B and i alleles. Rh factor is another marker for human red blood cells and is separately coded for by a different gene that shows complete dominance, with two phenotypes: positive (dominant - R) or negative (recessive - r). A) Following a motor vehicle accident, a patient is rushed to the emergency department with multiple traumatic injuries, causing severe bleeding. The patient's condition is critical, and there is no time for determining his blood type. What type of blood is transfused? (Don't explain) Blood type: The father of two children is type O+, and the mother is type A+. The children are O- and A+. Given this information, what are the genotypes of father and mother? Show work! Father: Mother:

          Codominance and / or mixed dominance, more than one trait
12) 4 pts. Blood types in humans are caused by a combination of two of three possible alleles, A, B, and i. The i
allele is recessive and when an individual is homozygous for this allele, they have type O blood. Blood type A
may be due to a homozygous condition, or to an A and i allele. Blood type AB is caused by having a copy of
both the A and B alleles. Blood type B is due to being homozygous or heterozygous with B and i alleles. Rh
factor is another marker for human red blood cells and is separately coded for by a different gene that shows
complete dominance, with two phenotypes: positive (dominant - R) or negative (recessive - r).
A) Following a motor vehicle accident, a patient is rushed to the emergency department with multiple traumatic
injuries, causing severe bleeding. The patient's condition is critical, and there is no time for determining his blood
type. What type of blood is transfused? (Don't explain)
Blood type:
The father of two children is type O+, and the mother is type A+. The children are O- and A+. Given this
information, what are the genotypes of father and mother? Show work!
Father:
Mother:

Codominance and / or mixed dominance, more than one trait
12) 4 pts. Blood types in humans are caused by a combination of two of three possible alleles, A, B, and i. The i
allele is recessive and when an individual is homozygous for this allele, they have type O blood. Blood type A
may be due to a homozygous condition, or to an A and i allele. Blood type AB is caused by having a copy of
both the A and B alleles. Blood type B is due to being homozygous or heterozygous with B and i alleles. Rh
factor is another marker for human red blood cells and is separately coded for by a different gene that shows
complete dominance, with two phenotypes: positive (dominant - R) or negative (recessive - r).
A) Following a motor vehicle accident, a patient is rushed to the emergency department with multiple traumatic
injuries, causing severe bleeding. The patient's condition is critical, and there is no time for determining his blood
type. What type of blood is transfused? (Don't explain)
Blood type:
The father of two children is type O+, and the mother is type A+. The children are O- and A+. Given this
information, what are the genotypes of father and mother? Show work!
Father:
Mother:

Added by Justin A.

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