Masteringbio jfor each of the studies described below, indicate if it is hypothesis driven and whether the scientist is employing observational or manipulative methods. match the words in the left column to the appropriate blanks in the sentences on the right. words can be used once, more than once, or not at all.

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Which strand is synthesized towards the replication fork