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






2. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






3. Selection acting against the extremes of a range of variation - resulting in resistance to change in allele frequencies






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






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






6. Genes contain instructions for assembling






7. Movement of organisms ro of from a population






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






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






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






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






12. The movement of individuals into an area






13. Different alleles for a gene






14. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






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






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






17. How often a particular gene occurs in the population






18. Synonym for protein; chain of amino acids






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






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






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






22. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






24. Group of similar organisms that can breed and produce fertile offspring






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






26. Gradual evolution within a lineage






27. T or F a codon consist of three nucleotides






28. Molecules that join together to form DNA and RNA. Monomers that make up a nucleic acid






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






30. The formation of new species as a result of evolution






31. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






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






34. Situation in which allele frequencies remain constant






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






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






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






38. Visual expression of a trait






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






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






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






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






43. A body cell






44. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






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






46. One of the identical rods of a chromosome.






47. What happens during the process of translation






48. Predicts the possible outcome of a genetic cross.






49. A process where the organisms that have traits that aid in its survival (adaptive traits) will reproduce to pass that trait to futher generations thus increasing the frequency of that trait in the population. Vice versa traits that reduce the chance






50. DNA is made of...