Across
- 4. A chemical messenger
- 7. Consisting of two of the same alleles
- 12. The genetic makeup of a person based off of their genetic material
- 13. Neurotransmitter that controls memory and learning
- 14. neurotransmitter that controls muscle action and memory
- 15. Space between two neurons
- 17. A person's physical traits
Down
- 1. Consists of two different alleles
- 2. Proposed the theory of evolution by natural selection
- 3. A drug that blocks the normal actions of a neurotransmitter
- 5. secretes thyroxine
- 6. nucleic acids and protein can be found here along with a persons genetic make up
- 8. neurotransmitter that controls mood and sleep
- 9. Secretes hormones to help regulate blood sugar
- 10. Part of DNA that contributes to different factors of a person
- 11. This contributes to some physiological, and psychological traits of a person
- 16. A drug that mimics or enhances the effect of a neurotransmitter