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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. The environmental factors that favour certain phenotypes






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






3. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






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






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






6. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






7. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






8. Is found in DNA






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






10. A DNA double helix is held together in the center by between nitrogenous bases






11. The banding pattern of a persons DNA after being cut and run on gel is called






12. What does DNA stand for...






13. Breeding organisms with specific traits in order to produce offspring with identical traits






14. T or F If a nucleic acid contain uracil it is DNA






15. A unique combination of traits that are passed down from one generation to another.






16. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






17. Human - like species that existed millions of years ago as witnessed through fossil evidence.






18. The sum total of an organism's requirements; its way of life






19. Organ no longer serves a function






20. Process in which DNA is duplicated






21. Organ that serves no useful function in an organism






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






23. Building block of a protein






24. Gene

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25. Because of base pairing in DNA the amount of






26. The study of the structures of different organisms - looking at homologous parts






27. A group of organisms of the same species occupying a given area.






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






29. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






30. How often a particular gene occurs in the population






31. The backbone of DNA consist of...






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






33. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






34. Change to a chromosome in which a fragment of the chromosome is removed






35. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.






36. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






37. Speciation which does not involve a period of geographical separation






38. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






39. A geographic gradient in the extent to which a character is developed in a species






40. Trait where heterozygous is a blending of two alleles






41. Identical alleles for a gene






42. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






43. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






44. The specific location of a gene on a chromosome






45. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






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






47. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






48. Embryos of similar organisms have very similar early development indicating similar DNA at work






49. The comparison of the structures of different organisms






50. A body cell