<span>This </span>type<span> of </span>mutation is<span> a change in one </span>DNA base pair<span> that </span>results<span> in the substitution of one amino acid for another in the protein made by a gene. ... of </span>DNA<span>. Small deletions may remove one or a few </span>base pairs within<span> a gene, while larger deletions can remove an entire gene or several neighboring genes.</span>
If the sample of matter is a pure substance, meaning made up of only one type of atom.
<span>All the animals mentioned [monkey, fish, star fish, clam gecko] have endoskeleton except grasshopper which has exoskeleton. Endoskeleton is an internalised skeleton which is found inside the body of the animals which possess it while exoskeleton is a type of skeleton that is found outside the body.</span>
Answer:
Nonrandom mating and genetic drift
Explanation:
Nonrandom mating is when an organism chooses a mate based on certain traits that the mate has. This decreases genetic variation, especially if the salamanders choose mates that have very similar traits to itself leading to the possibility of inbreeding. Inbreeding can lead to sterility and low survival rates which also decreases the genetic variation of the captive population of salamanders.
Genetic drift caused by a population bottleneck (where a small group of individuals are separated from the main population) can cause a change in allele frequency of the captive population. This could be an increase or decrease in allele frequency. An increase in an allele's frequency will occur until it is the only allele in the captive population, while a decrease in an allele's frequency will occur until it is no longer in the population at all. Both these occurrences could decrease the genetic variation in the captive salamander population.