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6-2Natural selection
6-3 The process of natural selection
| Question | Answer |
|---|---|
| The PROCESS by which populations CHANGE OVER TIME. | Evolution |
| A group of closely related organisms that can mate to produce fertile offspring. | species |
| All individual of a species that live in a an AREA at the same time. | population |
| What organism did Darwin study and collect while he visited the Galapagos Island. | Finch |
| Darwin observed that the beak size of the finch was directly related to what? | Diet/food |
| Practice by which humans(farmers, ranchers) select plants or animals for breeding based on desired traits. | Artificial selection |
| A in heritable feature. Example-tail Form of inherited characteristic. Example- short or long(tail) | trait |
| The PROCESS by which organisms that inherit ADVANTAGEOUS traits tend to reproduce more successfully than other organisms. | natural selection |
| Name the four parts of natural selection. | Overproduction, genetic variation, selection and adaptation |
| When an organism produces more offspring than the environment will support. | Overproduction |
| Mutations occur because of naturally occurring differences in genetic material allowing a population to adapt to environmental changes. | Genetic variation |
| Part of natural selection where a trait is selected for and becomes more common in the next generation. | Selection |
| A inherited trait that helps an organism to survive and reproduce in its environment. | Adaptation |
| Name two things that help species with change over time? | Adaptations and genetic differences |
| What happens to species as the environment changes? | They adapt (certain traits/mutations are favored) or become extinct. |
| Occurs when ALL members of a species dies. | Extinction |
| Natural selection can act only on ____________ traits | inherited |
| What did Darwin observe when he studies the Galapagos finch?. | Finch beaks differed on each island |
| Why did the finch on the Galapagos islands have different beaks? | finch beaks are directly related to their diets. |
| How do environmental changes affect the survival of a species. | Because enviroments tend to favor one trait. |
| Why are inherited traits, not acquired ones, involved in natural selection. | Because inherited traits are part of an organisms DNA. |
| A CHANGE IN DNA that results in variation. Variations can be harmful, helpful or have no effect. | Mutation |
| Variation leads to _________________ of organisms as a population adapts to environmental changes. | diversity |
| is where there is a variation of living things. | Diversity |
| T OR F- Mutation os one of the driving forces of NATURAL SELECTION. | true |
| Why is diversity good? | Increases the changes of survival under a changing environment. |
| An__________ is a trait must be INHERITED TRAIT that helps an organism to survive and reproduce. | adaptation. |
| a farmer crosses two plants to get a better tasting fruit. Is that natural selectio or artificial | Artificial |
| Greater competition, new predators and hoss of habitat are examples of _______________________ that can lead to extinction | environmental change. |
| If the eneviroment changes, genetic variation will halp a species survive. T or F | TRUE |
| What means different or distinct form or version of something. | Diversity |
Created by:
KHurst24