https://padlet.com/meganwitzman24/ptiizfvoi7gm Megan Witzman 3rd hour en-us 2020-02-04 16:22:08 UTC 2024-11-07 19:03:06 UTC hello@padlet.com meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/440384642 Which microevolution caused the finch beak to increase in size on Daphne Major from '76 to '78.]]> 2020-02-04 16:24:56 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/440384642 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/440388319 Natural selection caused the beak of the medium ground finch to increase size on Daphne Major from '76 to '78]]> 2020-02-04 16:29:36 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/440388319 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221015 1976: 130 mm of rainfall
1977: 20 mm of rainfall 
1978: 540 mm of rainfall 

There was a lack of rain on Daphne Major in the year 1977, causing a drought.]]> 2020-02-07 15:58:08 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221015 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221121 In the year of 1977 the average number of Portacala seeds per square meter was 3.5, and by November the total dropped to 0. The average number of Tribulous seeds per square meter was 8.3, and the total during November was 6.]]> 2020-02-07 15:58:18 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221121 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221182 This graph shows the beak depths and lengths of the Medium Ground finch on Daphne Major during 1976-1978.]]> 2020-02-07 15:58:24 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442221182 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442223733 In '76 the average beak length and depth were 9.6mm and 10.7mm, which meant that the beaks were not very strong. Since the beaks were not strong, they were better at eating the small, soft portocala seeds. When the drought occurred in 1977, there was a huge decrease in the population of portacala seeds, so the birds needed to find another source of food. The only other seed available to the birds to eat was the tribulous seed. Since the tribulous seed is hard, a bigger and harder beak would be needed to survive. If the finch has a small beak, it would not be able to eat the tribulous seed. If the finch cannot eat the seed and cannot find another food source, it will starve. As a result, finches with the small beak will have a major decrease in the population due to the lack of food. Meanwhile, the finch with a larger beak will have a sudden increase of population because there is more food for them. The trait that allowed the finches to survive was having a very long, or deep beak. Since this type of finch thrived, they survived and were able to reproduce and make more of their kind, which is why the population increased. The definition of natural selection is the process where organisms with favorable traits are more likely to reproduce. This was shown many times throughout the data and was very easily proven in the data that was given.]]> 2020-02-07 16:01:14 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/442223733 meganwitzman24 https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/443192879 This graph shows the population of Medium Ground Finches on Daphne Major by Month (1976-1979)]]> 2020-02-10 17:39:14 UTC https://padlet.com/meganwitzman24/ptiizfvoi7gm/wish/443192879