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






2. Process in which DNA is duplicated






3. The backbone of DNA consist of...






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






5. Organ no longer serves a function






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






7. Dna moves during electrophoresis because of...






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






9. Nucleotides that control which amino acids are added during protein synthesis






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






11. A change or error in the DNA sequence






12. Another term for pure breeding






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






14. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






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






16. A base found in DNA (but not in RNA). This base pairs with Adenine.






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






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






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






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






21. Inherited feature that tends to prevent species from interbreeding with other species






22. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






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






24. Large - scale evolutionary changes that take place over long periods of time






25. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






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






27. 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.






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






29. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






30. Synonym for protein; chain of amino acids






31. The study relating the evolution of new charateristics to changes in the genes controlling development






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






33. When competition causes two closely related species to become more different in regions where their ranges overlap






34. Found only in that country






35. A copy of a gene is made during a process called this






36. Proteins are made of...






37. A change in the base sequence of a gene






38. The final product of transcription is...






39. 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






40. 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






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






42. Trait evolves overtime; NO common ancestry






43. 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.






44. Mutation where an extra base is added






45. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






47. Building block of a protein






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






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






50. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.