 |
| 1 | |
Describe the biological meaning of the word evolution. |
| | |
|
|
|
| 2 | |
Why has Lamarck’s theory been rejected? |
| | |
|
|
|
| 3 | |
List five assumptions about the nature of living things that support the concept of evolution by natural selection. |
| | |
|
|
|
| 4 | |
Define natural selection. |
| | |
|
|
|
| 5 | |
What is fitness and how is it related to reproduction? |
| | |
|
|
|
| 6 | |
Why are acquired characteristics of little interest to evolutionary biologists? |
| | |
|
|
|
| 7 | |
In what way are the phrases “survival of the fittest” and “struggle for existence” correct? In what ways are they misleading? |
| | |
|
|
|
| 8 | |
What factors can contribute to diversity in the gene pool? |
| | |
|
|
|
| 9 | |
Why is over-reproduction necessary for evolution? |
| | |
|
|
|
| 10 | |
Why is sexual reproduction important to the process of natural selection? |
| | |
|
|
|
| 11 | |
How might a harmful allele remain in a gene pool for generations without being eliminated by natural selection? |
| | |
|
|
|
| 12 | |
List three factors that can lead to changed gene frequencies from one generation to the next. |
| | |
|
|
|
| 13 | |
Give two examples of selecting agents and explain how they operate. |
| | |
|
|
|
| 14 | |
Distinguish among stabilizing, directional, and disruptive selection. |
| | |
|
|
|
| 15 | |
Why is genetic drift more likely in small populations? |
| | |
|
|
|
| 16 | |
Give an example of genetic drift. |
| | |
|
|
|
| 17 | |
A gene pool has equal numbers of alleles B and b. Half of the B alleles mutate to b alleles in the original generation. What will the allele frequencies be in the next generation? |
| | |
|
|
|
| 18 | |
The Hardy-Weinberg concept is only theoretical. What factors do not allow it to operate in a natural gene pool? |
| | |
|
|
|
| 19 | |
The smaller the population, the more likely it is that random changes will influence gene frequencies. Why is this true? |
| | |
|
|
|
| 20 | |
Why is each of the following important for an understanding of evolution: mutation, migration, sexual reproduction, selective agents, and population size? |
| | |
|
|