Biology crossword

2. Animal moving into new habitat
6. when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other
9. physical separation of members of a population
11. relative frequency of an Allele at a particular locus or population
13. Opposite of extinct
14. condition where a gene pool is not changing in frequency across generations
15. process through which populations of living organisms adapt and change
17. rapid increase in the number of species with a common ancestor, characterized by great ecological and morphological diversity.
18. when individuals of intermediate phenotype are less fit than those of both higher and lower phenotype, such that extremes are favored
20. chain or group of islands scattered in lakes, rivers, or the ocean.

1. The complete set of DNA (genetic material) in an organism
3. when two or more species reproduce at different times
4. change in frequency of an existing gene variant in the population due to random chance.
5. descriptive term for what happens to an individual trait when the extremes of the trait are selected against
7. combination of all the genes (including alleles) present in a reproducing population or species
8. Animal moving out of old habitat
10. one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
12. Complete loss of this species on earth
16. inability of a species to breed successfully with related specie
19. term that describes mechanisms of gene transfer from one population to another