Biology, 08.02.2020 14:42 LMedley1373
An elephant has a long, powerful trunk. according to the ideas of lamarck, how did the trait of long, powerful trunks develop in elephants ?
a suddenly, after one elephant was born with a long, powerful trunk
b. suddenly, after one elephant developed a long, powerful trunk as it grew.
c. gradually, as elephants began mating with animals of other species that had long trunks.
d. gradually, as generations of elephants continued to selectively use and develop their trunks.
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The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer
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