unit 7 lesson 2 chart lab
1. Give a brief description of the evolutionary changes that occurred in the organism.
On one side of the chart the organism acquired a much larger tail on the left and became shorter while developing a darker head and on the other side. The organism obtained more limbs and became slightly bigger.
2. During which time period did the fossils differentiate into two branches?
Texian period
3. Explain how the chart illustrates both punctuated equilibrium and gradualism. Use specific fossils from the chart to support your answer.
Once can see that the fossils went through gradual changes and very rapid ones. The jump from Californian to Idahoan is a massive change. This makes it seem like punctuated equilibrium may occurred because of this change that occurred so quickly. The change from Lower to Upper Wyomotington is very gradual because the organism undergoes very slight changes.
4. Making the assumption that each fossil represents a separate species, explain how the chart illustrates divergent and phyletic speciation. Use specific fossils from the chart to support your answer.
On the chart phyletic speciation occurs. There are gradual changes of the organisms from the Wyomington time period to the Idohoan. Somewhere along the way the species changed so much so and became so much more different from the first part that they became different species. The divergent speciation occurs when a single species splits into two separate ones in the Nevadian time period. Because of the split, the two sides of the chart most likely stopped interbreeding and eventually developed so different from the other side that they became two different species.
5. Define the following terms
Morphology is the study of forms of things, such as organisms and their structual features.
fossil
The remains or impressions of a prehistoric organism in a rock or petrified.
phylogenetic tree
it is also known as an evolutionary tree shows inferred evolutionary relationships among various biological species based on similiraties and diffeneces in the character.
6. Examine the fossil that was un-earthered in a museum, apparently the labels and other information were lost. Using your fossil record, determine the time period this fossil is likely from.
The fossil is from the late Coloradian or early Montanian time periods. We know this because there is a dark colored head, the line going down the middle, and the multiple extra fins of the sides.
7. Of the two major species that arose from the parent species, which was more successful? How do you know?
Based on the fossil record the species on the left lived a lot longer than the one on the right side of the chart. The one on the right side of the chart went extinct in the Montanian age around 170,00 years ago.
8. For each of the “blanks” on your fossil record make a sketch of what the animal would look like. Draw these on your fossil record.
On one side of the chart the organism acquired a much larger tail on the left and became shorter while developing a darker head and on the other side. The organism obtained more limbs and became slightly bigger.
2. During which time period did the fossils differentiate into two branches?
Texian period
3. Explain how the chart illustrates both punctuated equilibrium and gradualism. Use specific fossils from the chart to support your answer.
Once can see that the fossils went through gradual changes and very rapid ones. The jump from Californian to Idahoan is a massive change. This makes it seem like punctuated equilibrium may occurred because of this change that occurred so quickly. The change from Lower to Upper Wyomotington is very gradual because the organism undergoes very slight changes.
4. Making the assumption that each fossil represents a separate species, explain how the chart illustrates divergent and phyletic speciation. Use specific fossils from the chart to support your answer.
On the chart phyletic speciation occurs. There are gradual changes of the organisms from the Wyomington time period to the Idohoan. Somewhere along the way the species changed so much so and became so much more different from the first part that they became different species. The divergent speciation occurs when a single species splits into two separate ones in the Nevadian time period. Because of the split, the two sides of the chart most likely stopped interbreeding and eventually developed so different from the other side that they became two different species.
5. Define the following terms
Morphology is the study of forms of things, such as organisms and their structual features.
fossil
The remains or impressions of a prehistoric organism in a rock or petrified.
phylogenetic tree
it is also known as an evolutionary tree shows inferred evolutionary relationships among various biological species based on similiraties and diffeneces in the character.
6. Examine the fossil that was un-earthered in a museum, apparently the labels and other information were lost. Using your fossil record, determine the time period this fossil is likely from.
The fossil is from the late Coloradian or early Montanian time periods. We know this because there is a dark colored head, the line going down the middle, and the multiple extra fins of the sides.
7. Of the two major species that arose from the parent species, which was more successful? How do you know?
Based on the fossil record the species on the left lived a lot longer than the one on the right side of the chart. The one on the right side of the chart went extinct in the Montanian age around 170,00 years ago.
8. For each of the “blanks” on your fossil record make a sketch of what the animal would look like. Draw these on your fossil record.
Unit 7 lesson 1 inquiry and research
1. The origins of life were thought to have come from divinity. A divine form of some sort was believed to had created all life around the same time. We know that life forms such as humans came after early life forms and that life always is changing.
2. The primitive atmosphere had little oxygen was present, but hydrogen was abundant. Oxygen was bound in water and metallic oxides. The early atmosphere contained nitrogen, water, hydrogen, methane, ammonia and water vapors.
3. The heterotrophic hypothesis talks about how the very first cell was turned into a heterotroph. The hypothesis talks about the conditions the earth must have for it to create the first cell.
4. Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?
5. A coacervate is a tiny spherical droplet of assorted organic molecules which is held together by hydrophobic forces from a surrounding liquid. They bond together to form organisms. It is thought that some coacervates combined to form the first life.
2. The primitive atmosphere had little oxygen was present, but hydrogen was abundant. Oxygen was bound in water and metallic oxides. The early atmosphere contained nitrogen, water, hydrogen, methane, ammonia and water vapors.
3. The heterotrophic hypothesis talks about how the very first cell was turned into a heterotroph. The hypothesis talks about the conditions the earth must have for it to create the first cell.
4. Was there molecular oxygen in the earth's primitive atmosphere? How has that molecule become abundant?
5. A coacervate is a tiny spherical droplet of assorted organic molecules which is held together by hydrophobic forces from a surrounding liquid. They bond together to form organisms. It is thought that some coacervates combined to form the first life.