Biology

Biology, 02.07.2019 22:00, Akkenson17871

During a storm, several butterfly eating during a birds were blown to a distant island. the island, which previously had no birds, was filled with butterflies of all colors. one year later, all the butterflies or dark green and brown. which is the following is most likely explanation for the change in the butterfly population

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Biology, 26.07.2019 21:30, youngsunc02

Agroup of 50 sparrows (small birds) were blown off course by a storm during their winter migration. the birds were stranded on an island in the middle of the pacific ocean. because this island was too far from the mainland for a yearly migration, the sparrows only mated with the other sparrows stranded on the island. after 500 years, this small isolated group of sparrows had beaks 25% longer than the mainland population. this is an example of:

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Biology, 18.09.2019 00:20, tatianna341

Imagine a scenario in which part of a population of south american finches is blown by a storm onto an island far offshore and manages to survive and reproduce there for a period of 10,000 years. after that period, a climate change results in lower sea levels and the reconnection of the island with the mainland. members of the formerly isolated island finch population can now interact freely with members of the original mainland population. which of the following observations would, by itself, lead you to conclude unequivocally that the island finch population had evolved into a distinct species? a. the island birds all have red feathers, but the mainland birds have only green feathers. b. individuals from the different populations sometimes mate with each other, but all of the resulting eggs are sterile. c. individuals from the different populations seem to mate freely with each other, and the resulting offspring mate freely with either island birds or mainland birds. d. individuals from the different populations feed on the same kinds of seeds in the same habitats and frequently direct courtship behavior toward members of the other population. e. hybrid offspring of matings between individuals from the two populations do not look like either parent.

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Biology, 19.09.2019 05:20, figueroajorge8291

Imagine that part of a population of south american finches is blown by a storm onto an island far offshore and manages to survive and reproduce there for a period of 10,000 years. after that period, a climate change results in lower sea levels and the reconnection of the island with the mainland. members of the formerly isolated island finch population can now interact freely with members of the original mainland population. which of the following observations would, by itself, lead you to conclude unequivocally that the island finch population had evolved into a distinct species, according to the biological species concept? a) individuals from the different populations sometimes mate with each other, but all of the resulting eggs are sterile.b) the island birds all have red feathers, but the mainland birds have green feathers.c) hybrid offspring of matings between individuals from the two populations do not look like either parent.d) the preferred food of the island birds is quite different from the diet of mainland birds.e) individuals from the different populations frequently direct courtship behavior toward members of the other population.

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Biology, 29.09.2019 03:00, kmsg2000

Agroup of birds is blown from the mainland to a small island during a storm. they remain there and develop into a new population.

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During a storm, several butterfly eating during a birds were blown to a distant island. the island,...

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