A woman with blood type B and a man with blood type A could have children with which of the following phenotypes?
A. AB or O
B. A, B, or O
C. A, B, AB, or O
D. AB only
Answer: C
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Desmosomes are a type of ____
a. anchoring junction b. cell adhesion molecule c. tight junction d. intermediate filament e. gap junction
Genetic testing is typically done with blood samples, yet red blood cells (erythrocytes) are anucleate (lack nuclei) and are thus devoid of DNA. How, then, are these tests done?
What will be an ideal response?
During a marathon, runners use up ATP and glucose early in the race. Which energy source is generally used next for producing more ATP?
A) glycogen B) starch C) cellulose D) steroids E) phospholipids
Which listing of geological periods is in the correct order, from oldest to most recent?
A) Cambrian, Devonian, Permian, Cretaceous B) Devonian, Cambrian, Permian, Cretaceous C) Cambrian, Permian, Devonian, Cretaceous D) Permian, Cambrian, Cretaceous, Devonian