The genes of the human leukocyte antigens (HLA) system encode cell surface
A) phospholipids.
B) glycolipids.
C) glycoproteins.
D) histamines.
C) glycoproteins.
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Which aquatic habitat contains a pelagic zone?
A) estuary B) lake C) salt marsh D) open ocean
What is the first event in the fossilization process?
A. erosion of soils around the organism B. burial of the organism by sediments C. conversion of organic tissue to minerals (rock) D. hardening of sediments in to rock
A woman has six fingers, but one of her parents has five fingers. She marries a man who has
five fingers. What is the probability that they will have a child who is homozygous dominant for this trait?
a. 0 percent b. 25 percent c. 50 percent d. 100 percent
Structurally similar RTKs have been found in all multicellular animals, suggesting that ____
a. RTK genes are resistant to mutation b. RTKs evolved relatively early in the history of animals c. RTKs evolved from G proteins d. RTKs are not involved in vital processes in animals e. RTKs have evolved independently of each other in animals