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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 in the base sequence of DNA; the ultimate source of new alleles






2. Because of base pairing in DNA the amount of






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






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






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






6. 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.






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






8. Proteins are made of...






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






10. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






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






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






13. The movement of individuals into an area






14. Dna moves during electrophoresis because of...






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






16. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






17. The complete genetic material contained in an individual






18. Chromosomes are collections of many






19. Mutation where an extra base is added






20. Periods of little adaptive change






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






22. Determined the concept of complementary base pairing






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






24. Copying the code from DNA onto mRNA






25. Used x ray cyrstallography to create an image of DNA






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






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






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






29. Visual expression of a trait






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






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






32. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






33. A change or error in the DNA sequence






34. The specific location of a gene on a chromosome






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






36. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






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






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. 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






40. Change in a DNA sequence that affects genetic information






41. 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.






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






43. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






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






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






46. What does DNA stand for...






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






48. Recognize and cut DNA at specific sequences usually palindromes






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






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