Which of the following is not an advantage of degeneracy in the genetic code?
a. more than one amino acid can bind to a trna.
b. each trna can bind to more than one codon.
c. most codons can bind to more than one trna.
d. fewer trna molecules are needed.

The correct answer is option A. "More than one amino acid can bind to a tRNA".

Explanation:

The degeneracy in the genetic code refers to a redundancy of the genetic code at which more than one of the three-base pair codon is translated into the same amino acid. This degeneracy happens because a wobble base pair allows that each tRNA can bind to more than one codon and most codons can bind to more than one tRNA. In consequence, fewer tRNA molecules are needed for translation. However, it is false to affirm that more than one amino acid can bind to a tRNA, the tRNA have their specific amino acid at which they can bind, the degeneracy only happens at the codon level.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.