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I'm Lichen Bio Evolu
I'm Lichen Bio Evolution
| Question | Answer |
|---|---|
| define evolution | change in a species over time |
| special characteristics that make an organism particularly well suited to its environment | adaptations |
| define natural selection | survival of organisms genetically best adapted to the environment |
| what causes variations | mutations and sexual reproduction |
| who developed the idea that new species or organisms develop by means of variations and natural selection | Charles Darwin |
| why do traits that are least beneficial to a species tend to decrease in frequency over time | they have a low survival value |
| what is similarity of embryos evidence for | may have had a common ancestor |
| why would some cockroaches survive the first spray of an insecticide | natural variation occurred in the population |
| why would the insecticide become less effective | bugs resistant to it lived and reproduced |
| first forms to appear on Earth were... | simple single celled organisms |
| role of meiosis in evolution | provides for variation |
| why does a mutation in a gamete contribute to evolution | bc gametes combine to form new individuals with variations from parents |
| why does a mutation in a body cell not contribute to evolution | bc body cells are not passed on to offspring |