Based on the data in Table 18-1, which of the following primates has the most recent common ancestor with humans?
a. rhesus monkey
b. gibbon
c. tarsier
d. gorilla
e. orangutan
D
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The specific regions within the variable region of an antibody that are responsible for antibody diversity and antigen specificity are called ________ regions.
Fill in the blank(s) with the appropriate word(s).
What is thought to be the origin of mitochondria and chloroplasts?
A. Cyanobacteria for mitochondria, purple bacteria for chloroplasts B. Purple bacteria for mitochondria, fungi for chloroplasts C. Purple bacteria for mitochondria, cyanobacteria for chloroplasts D. Algae for mitochondria, cyanobacteria for chloroplasts
Diarthroses
What will be an ideal response?
Two populations of cells may end up segregating themselves into different layers during development because they have different:
A) phospholipid molecules. B) cell adhesion molecules. C) sizes. D) DNA. E) apoptosis programming.