Which of the following scenarios can be classified as a negative feedback loop? increase in blood pressure to reduce heart rate
increase in testosterone to help increase a fight-or-flight response
increase in oxytocin caused by increased contractions
increase in platelet production to help increase blood clotting

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast

What is true of metabolism in its entirety in all organisms?

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?