after the drought of 1977, researchers on the island of daphne major hypothesized that medium ground finches that had large, deep beaks survived better than those with smaller beaks because they could more easily crack and eat the tough tribulus cistoides fruits. if this hypothesis is correct, what would you expect to observe if a population of these medium ground finches colonizes a nearby island where t. cistoides is the most abundant food for the next 1000 years? assume that (1) even the survivors of the 1977 drought sometimes had difficulty cracking the tough t. cistoides fruits and would eat other seeds when offered a choice; and (2) food availability is the primary limit on finch fitness on this new island.

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15-12-2022
Biology

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after the drought of 1977, researchers on the island of daphne major hypothesized that medium ground finches that had large, deep beaks survived better than those with smaller beaks because they could more easily crack and eat the tough tribulus cistoides fruits. if this hypothesis is correct, what would you expect to observe if a population of these medium ground finches colonizes a nearby island where t. cistoides is the most abundant food for the next 1000 years? assume that (1) even the survivors of the 1977 drought sometimes had difficulty cracking the tough t. cistoides fruits and would eat other seeds when offered a choice; and (2) food availability is the primary limit on finch fitness on this new island.

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akursharma9034 akursharma9034 · Answer 1 · 2022-12-24T16:36:56-05:00

After the drought of 1977, researchers on the island of daphne major hypothesized that medium ground finches that had large, deep beaks survived better than those with smaller beaks because evolution of yet larger, deeper beaks over time.

Researchers proposed that medium ground finches on Daphne Major with large, deep beaks fared better than those with smaller beaks during the drought of 1977 because they were better able to fracture and consume the hard Tribulus cistoides fruits.

Tribulus cistoides, also known as wanglo, the Jamaican feverplant, or puncture vine, is one of many species of flowering plants in the Zygophyllaceae family that are found across tropical and subtropical areas.

Tribulus Cistoides, sometimes referred to as "Abrojo de tierra caliente" (thistle of the hot country) in Mexico, is a plant native to Central, South, and Southern America. It can thrive in low, arid areas along the coast where there is sand or loose soil. As there may be loose soil nearby, this is also why it may survive in urban settings in or by the gutters of roads.

Learn more about subtropical areas from:

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