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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. A change or error in the DNA sequence






2. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






3. When F1 is fully fertile but F2 has low fertility (rice - cotton)






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






5. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






6. 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.






7. What is one benefit for having two strands of DNA?






8. Different alleles for a gene






9. Dna moves during electrophoresis because of...






10. Periods of little adaptive change






11. 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






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






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






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






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






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






17. Any agent that can cause a change in DNA






18. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






19. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






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






21. Process in which DNA is duplicated






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






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






24. Natural selection that causes the frequency of a particular allele to move in one direction






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






26. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






27. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






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






29. A body cell






30. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






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






32. Name for oism with one dominant and one recessive allele






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






34. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






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






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






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






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






39. The final product of transcription is...






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






41. The enzyme that binds to the promoter region of a gene during transcription is called...






42. Is found in DNA






43. How often a form of a gene appears in a gene pool






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






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






46. Speciation preceded by a period of geographical isolation






47. Recognize and cut DNA at specific sequences usually palindromes






48. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures






49. Organ no longer serves a function






50. Cross where you cross unknown genotype with a recessive