Reproductive isolation must happen
In the genetic code, codons made of of three bases specify an amino acid. With three bases, there are 64 possible permutations. With three codons corresponding to STOP codons, this leaves 61 combinations that code for an amino acid. This would require 61 distinct tRNA species were it not for the "wobble base"
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Hi there!
As resources in a population become less available, the population:
C. Reaches carrying capacity
When resources in a population become less available, the population will not be able to continue growing even more because there would be enough resources, and so, it has reached its carrying capacity.
When the exponential phase of a logistic growth curve of a population ceases:
C. Population growth begins to slow down.
The population will continue to grow but will do so at a slower and steadier rate.
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