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Natural Selection
| Question | Answer |
|---|---|
| The PROCESS by which individuals with adaptive traits will live longer, reproduce more, and pass on their genes. We call this ..... | Natural Selection! |
| What are the Big Two? | 1. Survive 2. Reproduce |
| What is an adaptive trait? | A trait that makes it more likely to survive and reproduce in an environment |
| What is the difference between abiotic and biotic? | Biotic factors are living factors and abiotic factors are nonliving factors. |
| How are evolution and natural selection related? | Evolution means change over time and natural selection explains HOW AND WHY things change over time. |
| What do we call a graph that shows the shifting of traits in an environment over time? | Histogram! |
| How does the age of fossils change as we go from the bottom of a rock layer to the top? | The oldest are on the bottom and they get younger as you move towards the top |
| What is a mutation? | It is a mistake in the DNA |
| What do we call any remains of once living organisms? | Fossils |
| How can we use DNA as evidence to support evolution? | We look for similarities between species |
| What's the best subject ever? | Science of course! Just seeing if you are paying attention. |
| Comparing living things in their earliest stages of development | Comparative Embryology (KNOW THE PICTURE) |
| Similar structures used for totally different purposes in different species | Homologous structures (KNOW THE PICTURE) |
| Phylogenetic trees | Used to trace a species back to a common ancestor |
| What do we know about Darwin's finches? | They have beaks that are adapted to the food that they eat |
| Remember the peppered moth? How and why did they change? | The moth were originally mostly white with a few black. The industrial revolution turned the trees black and slowly the moths changed to mostly black with a few white. They adapted to their new environment through the process of Natural Selection! |
| What causes a shift in the distribution of traits? | A change in the environment! |
| Are all mutations nonadaptive traits? | No! Some are adaptive, some are nonadaptive and some have no effect at all. |
| Why would a trait introduced by mutation be phased out? | It is a nonadaptive trait |
| Can a species evolve (CHANGE OVER TIME) without mutation? | No!!! Mutations provides the new trait which might turn out to be adaptive. |
| If there is a rapid change in food source , could that change the distribution of traits in a population? | Yes!!! Of course. Any change in the environment has the potential to shift a populations traits, |
| Would a population be more likely or less likely to survive a major change in its environment if it had little or no variation in traits? | Populations with little or no variation are far less likely to survive a change in their environment because they are less likely to have a trait that is adaptive in the new environment. |
Created by:
cwalczak
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