Question

Certain species of blind fish living in perpetual darkness in the ocean depths have evolved from ancestors that could see. Research indicates that the brain centers for vision in these fish is degenerating, whereas the brain centers controlling other senses are enlarging. What might be the MOST probable reason for the loss of vision in these fish

Answer 1

Blind fish in ocean depths have evolved to lose their vision due to the lack of light in their environment, favoring the development of other sensory abilities like electroreception that aid in their survival.

Step-by-step explanation:

The most probable reason for the loss of vision in blind fish living in perpetual darkness in the ocean depths is a process known as evolutionary adaptation. In an environment where light is absent, the sense of sight is not necessary for survival or reproduction. Over many generations, these fish have evolved in a way that allocates energy and resources to more advantageous senses, like hearing, smell, and the ability to sense electrical currents (electroreception), which are more useful in darkness for locating prey and navigating the environment. This evolutionary process leads to the degeneration of the visual brain centers while centers for other senses become more developed.

Answer 2

Step-by-step explanation:

Evolution for lack of light. If there is no reason for it you lose the ability but it strengthens other senses. It's compensation. The need to tell if the temperature has increased because of something nearby or ability to feel miniscule movement will increase to compensate for that lack of sense.