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






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






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






4. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






5. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






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






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






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






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






10. The preserved remains or traces of an organism that lived in the past






11. The sum total of an organism's requirements; its way of life






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






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






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






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






16. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






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






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






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






20. 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.






21. A change or error in the DNA sequence






22. 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






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






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






25. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






26. Organ no longer serves a function






27. Pea plants






28. Speciation preceded by a period of geographical isolation






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






30. Is found in DNA






31. Determined the concept of complementary base pairing






32. 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.






33. Determined the complete double helical structure of DNA






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






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






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






37. 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






38. The structure on a tRNA molecule that allows it interact with an mRNA molecule






39. A change in the base sequence of a gene






40. The movement of genes between populations as a result of mating of migration






41. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






42. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






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






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






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






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






47. A DNA strand that has the bases CTAATGT forms a complete complementary double helix with






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






49. Another name for a gene






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