04/11/18 bui2@tritons lowacentr ?See Periodic Table Q See Hint A threatened wetl
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04/11/18 bui2@tritons lowacentr ?See Periodic Table Q See Hint A threatened wetland plant that lives only in the floodplains of the lllinois River has only 12 populations scattered over a distance of 250 miles. The plant has seeds highly adapted to floating long distances on floodwater. The Ilinois River is also known for reversing flow during extreme flood events, providing multiple ways for seeds to land in different areas. A recent study examined the genetic diversity within and among this plant's populations. Astonishingly, the scientists discovered there s still a high degree of diversity with substantial genetic similarity between the populations even though they were widely separat What could explain this result? Select all that apply. Choose one or more: o A. Overall gene flow maintained the genetic diversity of the populations by actively transferring aleles among the remaining groups. B. Genetic bottlenecks had occurred in all of the populations C. The similarity was a result of gene flow that had occurred via seed dispersal on the river. D. Dispersed seeds germinated and then pollinated plants in other populations, resulting in gene flow. E. Unique mutations had occurred in each of the 12 populations. 03Explanation / Answer
Answer:
A) overall gene flow maintained the genetic diversity of the populations by actively transferring alleles among the remaining groups,
C) the similarity was as a result of gene flow that had occurred via seed dispersal on the river.
D) dispersed seeds germinated and then pollinated plants in other populations, resulting in gene flow.
These 12 populations scattered over 250 miles maintain their populations where seeds float over the longer distances as a result of which the seeds would be landing in different areas.
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