Astudent is working in a dna analysis laboratory and performs numerous dna isolations from eukaryotic cells. however, the student realizes at the end of the day that he forgot to label whether or not the dna samples he isolated were from nuclei or mitochondria. which of the following would not be a strategy the student could use to determine the origin of his dna isolates? a) the student could determine whether histones were present or not in each sample. b) the student could determine if the sample absorbed light of 260 nm. c) the student could compare whether the dna in each sample was circular or linear. d) the student could measure the average size of the dna isolated in each sample.

answer:   option a) glucagon was secreted by his pancreas before he ate the cookies because blood glucose was low. insulin was secreted after he ate the cookies because his blood glucose was high.

explanation:

what is the statement?

the right option is; decreased genetic variation  

decreased genetic variation describes the effect of this environmental change.

genetic variation is the naturally occurring genetic diversities or differences between organisms of the same species in a population. genetic variation allows the survival and adaptability of a species when they encounter changing environmental conditions. when an endangered species reduces, it loses genetic variation which may not be restored even if the species rebound and will only be recovered through the gradual collection of mutations over many years.