Use the following figure to answer the next few questions.

Figure 21.2
Figure 21.2 shows a diagram of blocks of genes on human chromosome 16 and the locations of blocks of similar genes on four chromosomes of the mouse.
-Which of the following represents another example of the same phenomenon as that shown in Figure 21.2?
A) the apparent centric fusion between two chromosome pairs of primates such as chimps to form the ancestor of human chromosome 2
B) the difference in the numbers of chromosomes in five species of one genus of birds
C) the formation of several pseudogenes in the globin gene family subsequent to human divergence from other primates
D) the high frequency of polyploidy in many species of angiosperms

Question

Use the following figure to answer the next few questions.
  
Figure 21.2
Figure 21.2 shows a diagram of blocks of genes on human chromosome 16 and the locations of blocks of similar genes on four chromosomes of the mouse.
-Which of the following represents another example of the same phenomenon as that shown in Figure 21.2?
A) the apparent centric fusion between two chromosome pairs of primates such as chimps to form the ancestor of human chromosome 2 
B) the difference in the numbers of chromosomes in five species of one genus of birds 
C) the formation of several pseudogenes in the globin gene family subsequent to human divergence from other primates 
D) the high frequency of polyploidy in many species of angiosperms

Quizplus · Accepted Answer

The phenomenon shown in Figure 21.2 is the conservation of gene order between different species. A similar example of this phenomenon is the fusion of two chromosome pairs in primates, such as chimpanzees, to form the ancestor of human chromosome 2.

Use the Following Figure to Answer the Next Few Questions