Which of the following observations about flagella is true and is consistent with the scientific conclusion that the flagella from protists and bacteria evolved independently?
A)Both flagella are made of the same protein,but the configuration is different.
B)The mechanics of movement and protein structure are the same in these flagella,but there are significant genetic differences.
C)Although the mechanism of movement in both flagella is the same,the protein that accomplishes the movement is different.
D)The protein structure and the mechanism of movement in protist flagella are different from those of bacteria flagella.

Question

Quizplus · Accepted Answer

The statement that the protein structure and mechanism of movement in protist flagella are different from those in bacteria flagella indicates that they evolved independently. Therefore, option D is the correct choice. Option A is incorrect because it suggests that the protein is the same, and only the configuration is different. Option B is incorrect because it contradicts the idea of independent evolution by stating that the mechanics of movement and protein structure are the same. Option C is incorrect because it suggests that the mechanism is the same, but the protein responsible for movement is different, which is not consistent with independent evolution.

Which of the Following Observations About Flagella Is True and Is