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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. Is found in DNA






2. 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.






3. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






4. A trait that masks the expression of another trait






5. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






6. Organ no longer serves a function






7. The number of times an allele appears in a population






8. Transcrition occurs in the...






9. What does DNA stand for...






10. 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






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






12. Ribosomal RNA; type of RNA that makes up part of the ribosome






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






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






15. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






16. The evolutionary process by which a species becomes better suited to its niche.






17. Mating of 2 oism that differ in 2 characters






18. Found only in that country






19. A codon is made of...






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






21. Another name for a gene






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






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






24. 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






25. The backbone of DNA consist of...






26. The environmental factors that favour certain phenotypes






27. Organ that serves no useful function in an organism






28. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






29. 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






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






31. How often a particular gene occurs in the population






32. Trait evolves overtime; NO common ancestry






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






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






35. Method of replication that implies that each new strand of DNA is half original and half new






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






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






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






39. 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.






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






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






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






43. Mutation where an extra base is added






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






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






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






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






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






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






50. Form of reproductive isolation in which tere are differences in species courtship behavior






Can you answer 50 questions in 15 minutes?



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