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Across 2. observable characteristics of an individual resulting from the interaction of its genotype with the environment 3. fundamental and distinctive characteristics or qualities of someone or something 4. a hybrid that is heterozygous with respect to a specified gene 5. the practice of living as a parasite in or on another organism 8. microscopic organisms drifting or floating in the sea or fresh water 9. an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane 10. the study of the forms of things, in particular. 13. having or consisting of many cells 16. any of the class of sugars that cannot be hydrolyzed to give a simpler sugar 17. any of a number of organized or specialized structures within a living cell 20. produced, occurring, or existing within a species or between individuals of a single species 24. biochemical processes of respiration and energy production occur 25. a sugar present in milk 26. the action or process of observing 27. medical condition in which the ability of the blood to clot is severely reduced 28. cell division that results in four daughter cells

Down 1. microscopic single-celled organism 2. adding of a phosphate to AMP or ADP 5. single-celled freshwater animal that has a characteristic slipper like shape and is covered with cilia 6. two or more forms of the same element 7. a thing that is inherited 11. the ingestion of bacteria or other material by phagocytes and amoeboid protozoans 12. the product or result of something 14. intake of oxygen and the release of carbon dioxide 15. existing or occurring between different species 18. a process by which molecules of a solvent tend to pass through a semipermeable membrane 19. organisms benefit by living together 21. the chemical breakdown of a compound due to reaction with water 22. the genetic constitution of an individual organism 23. bacteria and blue-green algae