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CSET Genetics And Evolution

Subjects : cset, science, genetics
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Proteins are made of...






2. Features that are superficially similar but have different modes of development






3. Organ that serves no useful function in an organism






4. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






5. Building block of a nucleic acid (DNA and RNA)






6. Determined the concept of complementary base pairing






7. Periods of rapid evolution punctuated by periods of little change






8. The movement of genes between populations as a result of mating of migration






9. Impression made from a organism in soft material such as sand or mud.






10. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches






11. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






12. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






13. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






14. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






15. Group of individuals of the same species that live in the same area






16. A change in the base sequence of a gene






17. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






18. Selection for the ability to obtain a mate






19. Independent segregation of genes during the formation of gametes






20. The movement of individuals into an area






21. Is any chromosome that is not a sex chromosome.






22. The backbone of DNA consist of...






23. Two alternative forms of a gene e.g Tall vs Short






24. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






25. Three mRNA nucleotides that code for a specific amino acid






26. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






27. Which type of Rna functions as a blue print of the genetic code






28. A change in the base sequence of DNA; the ultimate source of new alleles






29. Natural selection that causes the frequency of a particular allele to move in one direction






30. The adaptive increase in pigmentation as a result of human - induced pollutants






31. Used x ray cyrstallography to create an image of DNA






32. Visual expression of a trait






33. DNA that is coiled around proteins






34. The specific location of a gene on a chromosome






35. T or F A cloned organism has the same proteins as another organism






36. Translation occurs in the...






37. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






38. Pea plants






39. How often a form of a gene appears in a gene pool






40. The gradual changes in gene frequencies in a population due to random events






41. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






42. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






43. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






44. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






45. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






46. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






47. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






48. Gene

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49. The final product of transcription is...






50. Separation of species or populations so that they cannot interbreed and produce fertile offspring