Test your basic knowledge |

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






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






3. Genes contain instructions for assembling






4. Selection for the ability to obtain a mate






5. Which structure contains anticodons






6. Found only in that country






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






8. The final product of transcription is...






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






10. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






11. 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






12. Another term for pure breeding






13. Change in a DNA sequence that affects genetic information






14. Ribosomes are made of...






15. Innate trait; shared ancestry






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






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






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






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






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






21. Because of base pairing in DNA the amount of






22. A mutation in which one nucleotide is replaced by another nucleotide






23. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






24. Predicts the possible outcome of a genetic cross.






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






26. Disappearance of a species from all parts of its geographical range






27. Deoxyribonucleic acid carries the genetic code for the proper functioning of an organism. It is composed of 5 carbon sugar (deoxyribose) four bases Adenine - Thymine - Cytosine and Guanine. the sugar is bonded to a phosphate group. This forms a long






28. A pairing where the parent plants differ in only one character.






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






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






31. Different alleles for a gene






32. 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.






33. Movement of alleles into or out of a population due to the migration of individuals to or from the population






34. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






35. A change in the base sequence of a gene






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






37. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






38. Nucleotides that control which amino acids are added during protein synthesis






39. Mating of 2 oism that differ in 2 characters






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






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






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






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






44. 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.






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






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






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






48. 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.






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






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