Evolution

3. organisms interacting with their physical environment
4. a small asexual spore that develops
10. a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence
12. animals except birds and mammals;having body temperature that varies with the environment
14. hybridization using two traits with two alleles each
16. the process by which the body breaks down food
17. breakdown of cells by the destruction of their outer membrane
18. branch of biology that studies the structure and function of cells

1. an allele that produces the same phenotype whether its paired allele is identical or different
2. the internal skeleton; bony and cartilaginous structure
5. the act of dispersing something
6. a plant having foliage that is shed annually at the end of the growing season
7. the state of being joined together
8. embryonic leaf in seed-bearing plants
9. the substance inside a cell, not including the nucleus
11. the inner portion of the cytoplasm of a cell
13. the environment as it relates to living organisms
15. a substance that cannot be separated into simpler substances