Answer:
B. The mutations were beneficial for each new environment.
Explanation:
The given blank can be filled with implicit memory.
The implicit memory is a type of long term memory. This type of the memory is used and acquired unconsciously. This can affect the thought and the behavior of the person.
In the given case, once a person learns to ride a bicycle, whenever he or she will ride a bicycle will start paddling and balancing the handle and tires, even if it is unknown to the person that he is doing all these things.
Scientists most often produce new genetic variations of organisms by causing mutations with radiation or chemicals and then selectively breeding in order to emphasize the desired traits in the new variations. The Dachshund is an example of this. By breeding two dogs with a similar mutation that caused student legs and elongated backs breeders were able to create a new variation not found in nature.
The Atlas. This is the topmost vertebra, and with the axis, it forms a joint that connects the skull to the spine. These two parts of the body (The Atlas and The Axis) are special, and different from normal vertebra, because they are made to allow a greater range of motion and movement in the head. I hope this helps! Also, google is always a helpful tool to use as well. :)