Download Chapter 14 Review pages 316

Chapter 14 Review pages 316 - 317
Multiple Choice
1. Darwin was familiar with the works of all of the following except: a) Mendel
2. Which of the following is needed for a new species to form: d) reproductive isolation
3. Farmers change the gene pool of a population by: c) artificial selection
4. The source of random variation on which natural selection operates are changes in: b) genes
5. An example of analogous structures are a: b) bird’s wing and a butterfly’s wing
6. Which of the following ideas proposed by Lamarck was later found to be incorrect: a)
acquired characteristics can be inherited
7. Malthus thought that all of the following would prevent the endless growth of the human
population except: d) evolution
8. Natural selection is also known as: c) survival of the fittest
Concept Mastery
4) Use artificial selection, i.e. focus on egg laying; pick hens with most eggs, breed to male
offspring of ‘good layers’ , and shift your population to more egg laying.
5) Reproductive isolation prevents the genes of the isolated population from being mixed with
the genes of other populations, thereby producing a separate gene pool.
6) Changes in genes often produces changes in phenotype, sometimes resulting in organisms
that are more fit to survive. Natural selection favours such individuals, and they pass on their
genes to new generations.
8) Two species in the same niche must compete, resulting in the death of one or both species.
Critical and Creative Thinking
4. Panda numbers are tied to the supply of bamboo, a grass that naturally dies back after
reproducing -> no food! When bamboo flowers the pandas are at risk for starvation.