Crickets have colonized each island in the Hawaiian Archipelago. Geological data indicates that Kauai is the oldest island in the chain and Hawaii is the youngest. Researchers hypothesized that crickets sequentially colonized islands as they rose out of the ocean and created a cladogram based on molecular relationships to test this idea. 1) Mark & label (as “MRCA”) the most recent common ancestor for all crickets on the island of Kauai. 2) Molokai is roughly equally distant from Oahu as Maui, but not equally related. Are Molokai crickets more closely related to those on Oahu or Maui?
Crickets have colonized each island in the Hawaiian Archipelago. Geological data indicates that Kauai is the oldest island in the chain and Hawaii is the youngest. Researchers hypothesized that crickets sequentially colonized islands as they rose out of the ocean and created a cladogram based on molecular relationships to test this idea. 1) Mark & label (as “MRCA”) the most recent common ancestor for all crickets on the island of Kauai. 2) Molokai is roughly equally distant from Oahu as Maui, but not equally related. Are Molokai crickets more closely related to those on Oahu or Maui?
Chapter16: Evidence Of Evolution
Section: Chapter Questions
Problem 7SA: If the half-life of a radioisotope is 20,000 years, then a sample in which three-quarters of that...
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Crickets have colonized each island in the Hawaiian Archipelago. Geological data indicates that Kauai is the oldest island in the chain and Hawaii is the youngest. Researchers hypothesized that crickets sequentially colonized islands as they rose out of the ocean and created a cladogram based on molecular relationships to test this idea.
1) Mark & label (as “MRCA”) the most recent common ancestor for all crickets on the island of Kauai.
2) Molokai is roughly equally distant from Oahu as Maui, but not equally related. Are Molokai crickets more closely related to those on Oahu or Maui?_________
![- Outgroup
he
Kauai
Oahu
Molokai
Molokai/
Maui
Maui
Oahu
h
Hawaii
Hawaii
Oahu
Maui
Hawaii
Time](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4dd4350b-0636-4dad-99ea-7c60a98d0037%2Fe90b40bd-01ad-44a2-9e2b-5372e3a19026%2Foj926ti_processed.png&w=3840&q=75)
Transcribed Image Text:- Outgroup
he
Kauai
Oahu
Molokai
Molokai/
Maui
Maui
Oahu
h
Hawaii
Hawaii
Oahu
Maui
Hawaii
Time
![Kauai (~5 Mya)
22°
Molokai
Maui
(~1 Mya)
Oahu
(~2.5 Мya)
Lanai
20°
Hawaii
(<0.5 Mya)
Loihi Seamount
18°
160°
158°
156°
154°](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4dd4350b-0636-4dad-99ea-7c60a98d0037%2Fe90b40bd-01ad-44a2-9e2b-5372e3a19026%2Fl8w0w1hm_processed.png&w=3840&q=75)
Transcribed Image Text:Kauai (~5 Mya)
22°
Molokai
Maui
(~1 Mya)
Oahu
(~2.5 Мya)
Lanai
20°
Hawaii
(<0.5 Mya)
Loihi Seamount
18°
160°
158°
156°
154°
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