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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. The comparison of the structures of different organisms






2. Determined the concept of complementary base pairing






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






4. Which structure contains anticodons






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






6. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






7. 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






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






9. A limb with five digits (fingers)






10. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.






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






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






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






14. Form of reproductive isolation in which two populations reproduce at different times






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






16. Change in allele frequencies as a result of the migration of a small subgroup of a population






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






18. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






19. Change of an organism over time. This can be caused by changes in in habitat or need to adapt for survival.






20. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






21. Two alternative forms of a gene e.g Tall vs Short






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






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






24. The evolutionary history/geneology of a group of organisms (a tree thingy)






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






26. Selection for the ability to obtain a mate






27. What happens during the process of translation






28. A change in the base sequence of DNA; the ultimate source of new alleles






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






30. Gene

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






32. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






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






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






35. The capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






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






38. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






39. Movement of organisms ro of from a population






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






41. 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.






42. T or F a codon consist of three nucleotides






43. The movement of individuals into an area






44. A geographic gradient in the extent to which a character is developed in a species






45. Speciation preceded by a period of geographical isolation






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






47. Transfer RNA; type of RNA that carries amino acids to the ribosome






48. Change to a chromosome in which part of the chromosome is repeated






49. The independant evolution of similar traits - starting from a similar ancestral condition






50. Periods of little adaptive change