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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 molecules responsible for bringing amino acids to the ribosome during protein synthesis are






2. Organ no longer serves a function






3. Group of individuals of the same species that live in the same area






4. The specific location of a gene on a chromosome






5. Hybrid is sterile so biologically unfit






6. Is the evolutionary process whereby a population becomes better suited to its habitat






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






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






9. Mating of 2 oism that differ in 2 characters






10. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






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






12. The environmental factors that favour certain phenotypes






13. Which type of Rna functions as a blue print of the genetic code






14. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






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






16. 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.






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






18. 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






19. A nucleotide of RNA is made of...






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






21. Large - scale evolutionary changes that take place over long periods of time






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






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






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






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






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






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






28. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






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






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






31. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






32. Genes contain instructions for assembling






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






34. 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.






35. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






36. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






37. Periods of rapid evolution punctuated by periods of little change






38. A trait that masks the expression of another trait






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






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






41. 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






42. The final product of transcription is...






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






44. Gene

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45. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






46. 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.






47. DNA that is coiled around proteins






48. Mutation where an extra base is added






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






50. Evolution resulting from small specific genetic changes that can lead to a new subspecies