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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. Translation occurs in the...






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






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






4. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






5. Situation in which allele frequencies remain constant






6. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






7. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






8. The study of the past and present distribution of species.






9. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






10. Human - like species that existed millions of years ago as witnessed through fossil evidence.






11. 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.






12. T or F a codon consist of three nucleotides






13. Mutation where an extra base is added






14. Found only in that country






15. Condition in which an organism has extra sets of chromosomes






16. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






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






18. Gradual evolution within a lineage






19. During transcription an RNA molecule is formed






20. Another name for a gene






21. 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.






22. How often a particular gene occurs in the population






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






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






25. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






26. What happens during the process of translation






27. 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






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






29. Copying the code from DNA onto mRNA






30. A change in the base sequence of a gene






31. Is any chromosome that is not a sex chromosome.






32. Proteins are made of...






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






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






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






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






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






38. Selection for the ability to obtain a mate






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






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






41. Visual expression of a trait






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






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






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






45. Mating of 2 oism that differ in 2 characters






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






47. Consists of all genes - including all the different alleles - that are present in a population






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






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






50. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.