Across
- 4. the form of a trait that has two different alleles
- 5. type of asexual reproduction in which a cell equally divides including genetic material
- 7. type of cell with a true nucleus containing DNA in the form of chromosomes
- 8. cellular process of engulfing food or particles
- 12. single-stranded nucleic acid with ribose sugar and nitrogenous bases of A, G, C, and U
- 13. defined as a group of organisms with similar structure, function, and behavior
- 14. deoxyribonucleic acid is the heredity material of most organisms
- 16. the form of a trait in which the two alleles are similar
- 20. trait or allele dominated by the dominant allele, this trait only expressed if both alleles are recessive
- 23. Y-shaped protein called immunoglobulin (Ig)
- 25. an independent, self-replicating, circular piece of DNA
- 26. results from the introduction of antibodies from another person or animal
- 27. represents the genetic factors of the phenotype
Down
- 1. the science of naming and classifying organisms
- 2. resistance developed by an individual that helps to combat a pathogen
- 3. theory states that all living organisms are composed of cells
- 6. antigens, or parts of antigens, that are killed or weakened and do not cause infection or disease
- 8. cell that lacks a membrane-bound nucleus
- 9. response to a pathogen in which the immune system begins making or releasing antibodies
- 10. three nucleotides on the mRNA that code for an amino acid
- 11. segment of DNA that determines an organism’s characteristics
- 15. alteration that can occur in DNA
- 17. the external appearance of a trait
- 18. branch of biology that deals with the study of inheritance of traits
- 19. transmission of traits from parents to their offspring
- 21. submicroscopic, obligate intracellular parasites
- 22. traits or alleles suppress the recessive trait
- 24. one of two or more alternative forms of a gene on a chromosome