https://padlet.com/westonparks23/3xfqq8c0yp6l Which mechanism of microevolution caused the beak of the medium ground finch population on Daphne Major to increase in size from 1976 to 1978? en-us 2019-02-05 14:24:26 UTC 2023-04-09 03:01:49 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Xmastree.png westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328223750 Natural selection is the mechanism of microevolution that caused the beak of the medium ground finch population on Daphne Major to increase in size from 1976 to 1978.]]> 2019-02-06 13:26:22 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328223750 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328225610 2019-02-06 13:30:09 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328225610 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328227126 The finches mostly had access to Tribulus seeds, as the number of Portulaca seeds decreased. This can be seen in the data titled: 'Number of Portulaca and Tribulus Seeds per Square Meter by Month (1975-1979)' and also on the line graph (Evidence Graphs Link).]]> 2019-02-06 13:33:20 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328227126 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328234639 2019-02-06 13:47:50 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328234639 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328235662 A drought occured on Daphne Major during the time that the seed counts and beak sizes started changing. This can be seen in the data titled: 'Rainfall on Daphne Major by Year (1974-1991)' and also on the first bar graph (Evidence Graphs Link).]]> 2019-02-06 13:49:47 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328235662 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328236704 The population count of the finches started decreasing and then raised again after the drought was over. This can be seen in the data titled: 'Number of Medium Ground Finches on Daphne Major by Month (1976-1979)' and also on the second bar graph (Evidence Graphs Link).]]> 2019-02-06 13:52:07 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328236704 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328238939 The finches of Daphne Major were adapted to the soft seeds known as the Portulaca seeds. When the count of the Portulaca seeds began to decrease, the finches were not adapted to the other food source, the tougher Tribulus seeds. This means that the finches with thin beaks would die out and wouldn't reproduce anymore, The small amount of finches with beaks that were strong enough to eat the Tribulus seeds were able to survive and reproduce. This supports natural selection, as natural selection has to do with how organisms adapt to environmental changes.]]> 2019-02-06 13:55:55 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328238939 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328245712 The drought that occured on Daphne Major caused the Portulaca seeds to decrease in numbers because they are less resistant than and need more water than the Tribulus seeds. When the environment changed, so did the population of the finches. They needed to have stronger beaks, which was possible due to natural selection and adaptations.]]> 2019-02-06 14:06:58 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328245712 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328249143 2019-02-06 14:12:09 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328249143 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328250375 2019-02-06 14:14:13 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328250375 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328250821 The population count started decreasing because of the change in what seeds were available to the finches. The finches were adapted to the ones that were decreasing, so they died out quickly. The population of finches did not die out completely though. Rare finches with beaks that are tougher and able to eat the seeds that were available were able to survive. They reproduced, and now the population of finches with tougher beaks increased. This is known as the finches being more 'fit' for the environment. After the drought was over and the island went back to normal, the population of finches increased and most of the population had a different beak size. The Portulaca seed count increased once again, so the population was thriving like before. Without the drought, the seed count wouldn't have changed, and without the seed count changing, the finches wouldn't have adapted to the new conditions in their habitat and wouldn't have had tougher beaks.]]> 2019-02-06 14:14:59 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328250821 westonparks23 https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328254901 2019-02-06 14:21:32 UTC https://padlet.com/westonparks23/3xfqq8c0yp6l/wish/328254901