Examlex
Please use the following information to answer the question(s) below.
A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Rh positive is a trait that shows simple dominance over Rh negative and is designated by the alleles R and r, respectively. A third gene for the MN blood group has codominant alleles M and N.
-At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype?
Red Blood Cells
Also known as erythrocytes, these are the cells in the blood responsible for carrying oxygen from the lungs to the rest of the body and returning carbon dioxide back to the lungs.
Oxygen
A chemical element vital for most forms of life on Earth, used in respiration and medical therapies.
Carbon Dioxide
A gas found in the air, exhaled by all animals; the chemical formula is CO2.
Phenylketonuria
A genetic disorder resulting from the body’s failure to oxidize an amino acid, perhaps because of a defective enzyme.
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