because

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Because environments change frequently, many beneficial mutations never spread widely enough to become fixed.

From Science Daily

"Our model suggests that natural populations are not truly adapted to their environments because environments change very quickly, and populations are always chasing the environment."

From Science Daily

"I think this has broad implications. For example, humans. Our environment has changed so much, and our genes may not be the best for today's environment because we went through a lot of other different environments. Some mutations may be beneficial in our old environments, but are mismatched to today," Zhang said.

From Science Daily

"At any time when you observe a natural population, depending on when the last time the environment had a big change, the population may be very poorly adapted or it may be relatively well adapted. But we're probably never going to see any population that is fully adapted to its environment, because a full adaptation would take longer than almost any natural environment can remain constant."

From Science Daily

"This is where the inconsistency comes from. While we observe a lot of beneficial mutations in a given environment, those beneficial mutations do not have a chance to be fixed because as their frequency increases to a certain level, the environment changes," Zhang said.

From Science Daily