ü How does the environment affect the evolution of a species?
This usually happens when isolation occurs. It could be something long term such as mountains forming or continent separating, or something as quick as flooding. When the species is separated, they are forced into another environment different from what the other species are placed in. Since they can’t come together and mix their DNA, they start to become different. They change what they are to continue to survive. WE see this with Wallabies and Kangaroos. Kangaroos have further apart legs, making it easier for them to jump through open fields, where wallabies have legs closer together to make them agile through dense forests. The weather also affects the evolution, where if it comes to where it rains a lot, animals or species that cannot work with the amount of rain will not survive and those who can will strive. |
ü Why do some offspring survive and others don’t in a changing ecosystem?
It’s all about adapting. Either the species will change to survive or die. If flies were to have their offspring regular, yet the frog population has increased incredibly. Some of the offspring that can’t adapt to live further from the pond with the increased frogs will not survive since they are too dependent to the pond. Where some of the other offspring will be able to leave to not be prey to the increased frogs. Along with this, natural selection comes in play. All the offspring are fighting for the same resources, mating, shelter, and prey. If they are not able to bet the other offspring, they will not survive, where the others that can get to these needed things and defend it will.
ü What is the effect of a changing climate on organisms and their evolution?
The climate effects how the organisms evolve and who survives. If the climate becomes hotter, then the species would have to change to be able to live in a hotter area than they’re used to. So if that means thinning out their fur coat, from having a thick one to sustain with the cooler climate, then that would be an example.
ü How can population growth be connected to evolution?
The Hardy-Weinberg Law described a population that exists in genetic equilibrium. If the population has increased being of migration, that new species part could have brought a mutation that could be beneficial, harmful, or neutral. Once that new species reproduces with the occupying, it would change the DNA make up for everyone. And eventually, it would just become part of that species, being formed into one and changing for the better.
ü How do the four factors of biological evolution work together for a species to evolve? Apply the four factors of biological evolution to a species.
1. Genetic Variability of offspring due to mutations and genetic recombination – Galapagos islands with finches beak
2. The potential for a species to increase its numbers (population growth) –Finches produce more offspring than those who survive, so then they have space for population growth.
It’s all about adapting. Either the species will change to survive or die. If flies were to have their offspring regular, yet the frog population has increased incredibly. Some of the offspring that can’t adapt to live further from the pond with the increased frogs will not survive since they are too dependent to the pond. Where some of the other offspring will be able to leave to not be prey to the increased frogs. Along with this, natural selection comes in play. All the offspring are fighting for the same resources, mating, shelter, and prey. If they are not able to bet the other offspring, they will not survive, where the others that can get to these needed things and defend it will.
ü What is the effect of a changing climate on organisms and their evolution?
The climate effects how the organisms evolve and who survives. If the climate becomes hotter, then the species would have to change to be able to live in a hotter area than they’re used to. So if that means thinning out their fur coat, from having a thick one to sustain with the cooler climate, then that would be an example.
ü How can population growth be connected to evolution?
The Hardy-Weinberg Law described a population that exists in genetic equilibrium. If the population has increased being of migration, that new species part could have brought a mutation that could be beneficial, harmful, or neutral. Once that new species reproduces with the occupying, it would change the DNA make up for everyone. And eventually, it would just become part of that species, being formed into one and changing for the better.
ü How do the four factors of biological evolution work together for a species to evolve? Apply the four factors of biological evolution to a species.
1. Genetic Variability of offspring due to mutations and genetic recombination – Galapagos islands with finches beak
2. The potential for a species to increase its numbers (population growth) –Finches produce more offspring than those who survive, so then they have space for population growth.
3. A finite supply of resources – Finches are forced to fight with other birds outside their own species, as they all need water, food, shelter to survive.
4. Natural selection by the environment for those offspring better able to survive and produce offspring. Finches go through natural selection by environment because a lot of them die because they don’t fit well in their environment, resulting in their death because of that struggle. Those who can survive and adapt in that environment will pass their DNA to spread through their offspring. |