Evolution of Populations

3. Trait controlled by two or more genes.
5. When allele frequencies change due to migration of a small subgroup of a population.
8. When the members of two populations cannot interbreed and produce fertile offspring.
10. Occurs during production of gametes, is caused by crossing over and increases the number of genotypes appearing in offspring.
14. The combined genetic information of all the members of a particular population.
15. When two populations are capable of interbreeding but have differences in courtship rituals or other types of behavior.
18. Takes place when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end.
19. Process that effects which individuals survive and reproduce and which don’t.
21. The formation of new species.
22. When two or more species reproduce at different times.

1. Any change in a DNA sequence that can occur because of mistakes during DNA replication.
2. The number of times an allele occurs in a gene pool compared with the number of times other alleles occur.
4. A group of individuals of the same species of a given area.
6. States that allele frequencies in a population will remain constant unless 1 or more factors cause those frequencies to change.
7. When two populations are separated by geographic barriers such as rivers or mountains.
9. When individuals near the center of the curve have higher fitness than individuals at either end of the curve.
11. When individuals at the upper and lower ends of the curve have higher fitness than individuals near the middle.
12. Trait controlled by single gene with two alleles.
13. A random change in allele frequency.
16. Any change over time in the relative frequencies of alleles in a population.
17. When allele frequencies remain constant.
20. A group of organisms that breed with one another and produce fertile offspring.