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






2. Change in a DNA sequence that affects genetic information






3. The backbone of DNA consist of...






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






5. All the factors in an organism's surroundings that can potentially affect it






6. When zygote does not complete development or is physically weaker than normal






7. A codon is made of...






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






9. Ribosomes are made of...






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






11. Periods of little adaptive change






12. Trait where heterozygous is a blending of two alleles






13. Organ that serves no useful function in an organism






14. Situation in which allele frequencies remain constant






15. A mutation in which one nucleotide is replaced by another nucleotide






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






17. What does DNA stand for...






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






19. A change or error in the DNA sequence






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






21. The complete genetic material contained in an individual






22. Chromosomes are collections of many






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






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






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






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






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






28. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






29. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






30. Evolution of living things - based on evidence from the past and present.






31. Transcrition occurs in the...






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






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






34. Proteins are made of...






35. Are noncoding sequences in the gene that are removed from RNA after transcription






36. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






37. Independent segregation of genes during the formation of gametes






38. The movement of individuals into an area






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






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






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






42. Identical alleles for a gene






43. Hybrid is sterile so biologically unfit






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






45. Mutation where an extra base is added






46. Selection acting against the middle of a range of variation






47. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






48. 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.






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






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