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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. Evolution resulting from small specific genetic changes that can lead to a new subspecies






2. Movement of organisms ro of from a population






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






4. The region of the chromosome that holds the two sister chromatids together during mitosis






5. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






6. The type of environment in which an organism or group normally lives or occurs






7. Translation occurs in the...






8. What does DNA stand for...






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






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






11. Genes contain instructions for assembling






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






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






14. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






15. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






16. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






17. Process by which one species gives rise to two or more species






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






19. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






20. How many codons are needed to specify three amino acids






21. Transcrition occurs in the...






22. Disappearance of a species from all parts of its geographical range






23. These prevent fertilization between species e.g. diff breeding season - mating behaviour






24. Even if the gametes of the two species meet - fertilization does not occur






25. Proteins are made of...






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






27. Selection for the ability to obtain a mate






28. Because of base pairing in DNA the amount of






29. Name for oism with one dominant and one recessive allele






30. DNA is made of...






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






32. Different alleles for a gene






33. A distinct population of a species that varies from other populations of the same species.






34. Independent segregation of genes during the formation of gametes






35. Gene

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36. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






37. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






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






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






40. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






41. A nucleotide of RNA is made of...






42. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






43. A combining of genes or characters different from what they were in the parents






44. Process by which a ribosome uses the code on mRNA to make proteins






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






46. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






47. An ancestor that two or more descendants have in common






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






49. Mutation where an extra base is added






50. Periods of little adaptive change






Can you answer 50 questions in 15 minutes?



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