Heterozygotes with the genotype HbA/HbS have
a. sickle cell anemia.
b. malaria.
c. blood type AS.
d. Fanconi's anemia.
e. sickle cell trait.
E
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A polymer of N-acetyl-glucosamine, chitin, is a primary component to most fungal cell walls
Indicate whether the statement is true or false.
Examine the pedigree in the figure above, where individuals that have the genetic condition being
tested are marked with filled squares or circles. Which of the following inheritance patterns is most likely correct for this condition?
a. autosomal dominant b. X-linked recessive c. X-linked dominant d. cytoplasmic inheritance e. autosomal recessive
A feature that only mammals have is:
a. predatory behavior. b. internal skeleton. c. bilateral symmetry. d. a skeleton of calcium carbonate. e. hair.
During what eon were dinosaurs and gymnosperms the dominant organism?
a. cenozoic b. archaean c. mesozoic d. phanerozoic e. jurassic