GENETICS by Sam and Louisa

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Across
  1. 1. Building blocks of DNA and RNA (RNA= A,U,G,C)(DNA= A,T,G,C)
  2. 3. Change in the genetic material (DNA)
  3. 5. Where both traits are present in the heterozygote. They are denoted by a capitol letter and a subscript
  4. 8. Abbreviation of gentically modified organism
  5. 9. Different forms of a particular gene
  6. 11. The general term for an egg or sperm
  7. 12. Chromosome that differs in males and females (Humans are X and Y)
  8. 15. A membrane-bound organelle containing DNA which is found in eukaryotic cells
  9. 17. Inheritied instructions carried in a chromosome. Specific segment of DNA which codes for a specific protein
  10. 22. Early stage of a developing organism
  11. 23. Macromolecule built of amino acids
  12. 24. Both the double set of genetic instructions present in a diploid organism
  13. 25. The process in cell division where the nucleus divides. Consists of four stages
Down
  1. 2. Basic building blocks of polypeptide chains and proteins
  2. 4. Three dimensional structure of DNA, consists of two nucleotide chains coiled in a regular manner
  3. 5. The entire contents of a cell which includes the cytosol and all the organelles
  4. 6. Cell formed by the union of two gametes
  5. 7. Expression of an organisms genotype in it's structural, biochemical and physiological characteristics
  6. 10. A trait that is expressed in the heterozygous condition
  7. 11. Introduction into a tissue or organ of specific DNA to replace or compensate for a defective disease causing allele
  8. 13. Thread like structure composed of DNA and protein, visible in cells during mitosis and meiosis
  9. 14. A trait that is not expressed but remains hidden in a heterozygous s and meiosisorganism
  10. 16. Male gametes produced in the testes
  11. 18. The basic structural and functional unit of all known living organisms
  12. 19. Nucleic acid whic contains the four bases. Forms the major component of chromosomes and contains coded genetic instructions
  13. 20. Process od cell division that results in the production of new cells each containing half the number of chromosomes of the original cell
  14. 21. Undifferentiated cells capable of differentiating into varios cell types
  15. 26. The female reproductive cell or gamete of animals. (egg)