Epigenetics refers to a special kind of hereditary mechanism. epigenetic changes do not change the dna nucleotide sequence, yet their effect on gene expression can last for several generations. in one surprising study, it was found that the grandsons of men who suffered a famine were less likely to die of cardiovascular disease. the experience of famine made some cardio-protective change in the sperm of those grandfathers that was passed on. what type of change was likely responsible?

Which osmotic and ionic strategies must marine teleost fishes employ?

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.