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Across 1. makes lipids in the cell 7. observable characteristics of an organism 8. circles on a pedigree represent which sex? 11. he looked at a piece of cork with his own microscope 14. diagram in which the pairs of homologous chromosomes are arranged in order of decreasing size 19. type of cell that does not have a nucleus or membrane bound organelles 20. site on the ribosome where the first tRNA attaches during translation 23. the start codon codes for this amino acid 25. job of the plasma membrane is to maintain ____ 26. German scientist that discovered all animal tissue is made of cells 30. segment of DNA that codes for a protein 33. contains the enzymes that digest excess or worm out organelles 34. when the homologous chromosomes exchange genetic information 35. adenine and guanine 36. examples include UV rays, tobacco, diet, inflammation 37. lines in which direction represent marriages on a pedigree? 40. produces energy for the cell 45. division of the nucleus 46. failure of chromosomes to separate during A2 of meiosis 47. movement of water from areas of high concentration to low concentration 48. modifies, sorts, and packages proteins into vesicles 49. bonds that hold amino acids together in a protein 51. virus that attacks bacteria 53. part of the nucleotide that is the same in DNA and RNA 54. Prussian physician that stated all cells are produced by existing cells 56. existence of more than 2 alleles for a genetic trait 57. building block of the DNA and RNA 58. alternative form of a gene 59. Mendel allowed his P generation to reproduce this way

Down 2. nitrogen base in RNA but not in DNA 3. study of heredity 4. bonds that hold the Nitrogen bases together in DNA 5. made of microtubules that function during cell division, only in animal cells 6. color of the Christmas Tree Lucy wants Charlie Brown to pick out in the Charlie Brown Christmas Special 9. the process by which the HC pair up during prophase 1 10. cell with the 2n number of chromosomes 12. in what city do the Griswolds live in the movie European Christmas Vacation 13. condensed structure that contains DNA and is visible during mitosis 15. programmed cell death 16. in the 12 days of Christmas Song, what is the gift on day 5 17. condition in which both alleles for a gene are expressed when present 18. haploid sperm and egg cells 21. captures light energy and converts it to chemical energy 22. genetic trait that is expressed when its allele is homozygous or heterozygous 24. makes the ribosomes 27. process of forming gametes, cuts the number of chromosomes in half 28. refers to an individual with two different alleles for a trait 29. name of the Arctic Prospector in Rudolph the Red Nosed Reindeer that goes with Rudolph to the Land of Misfit Toys 31. family history that shows how a trait is inherited over several generations 32. transmission of genetic traits from parent to offspring 38. what is used to show the generations in a pedigree? 39. sugar found in DNA 40. blood type is an example of this type of inheritance 41. chromosome numbers 1-22 42. diffusion and osmosis are examples of this type of transport 43. sugar found in RNA 44. center of the chromosome, holds chromatids together 50. 3 nitrogen bases on DNA 52. thick rigid mesh of fibers that surrounds the cell membrane in plants 55. short hairlike projections that look like hair on the outside of the cell