Answer: Option E
Explanation:
Mutation can be defined as the change in the sequence of DNA, either due to mistakes that takes place during replication or because of environmental factors.
The cause of mutation can be chemical mutagens, UV exposure, spontaneous mutation during replication, introduction of analog base pair.
Mutation can be positive or negative, but most of the time its effect is negative.
Hence, the correct answer is option E
<span>Condyloid joint
There are 6 types of synovial joints in the human body. For this question, the 2 types that are most likely are condyloid or ball-and-socket joints. Both of these joint types are very similar to each other, so let's look at them in detail to see which one is the correct answer.
Condyloid - Has an ovoid condyle from one bone fitting into an elliptical cavity. It permits movement in two planes, but does not permit rotation.
Ball-and-socket - A ball shaped surface of one bone fits into a cup shaped depression of another. This type of joint permits movement in multiple planes and rotation.
The key difference between these 2 joint types is the symmetry between them. For the ball and socket, the projection is shaped like a ball which is completely symmetrical whereas for the condyloid, the projection is more ellipsoidal or ovoid which prohibits rotation. And since ovoid is mentioned in the question, the best choice would be the condyloid joint.</span>
