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 comparison of the structures of different organisms






2. A population partially isolated from other populations of the same species






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






4. A taxon originating from and including a single common ancestor






5. Predicts the possible outcome of a genetic cross.






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






7. 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






8. Proteins are made of...






9. A codon is made of...






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






11. Genes contain instructions for assembling






12. 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.






13. How many codons are needed to specify three amino acids






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






15. Speciation which does not involve a period of geographical separation






16. Name for oism with one dominant and one recessive allele






17. Form of reproductive isolation in which tere are differences in species courtship behavior






18. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






19. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






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






21. 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






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






23. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






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






25. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






26. Found only in that country






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






28. Any agent that can cause a change in DNA






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






30. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






31. Visual expression of a trait






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






33. Even if the gametes of the two species meet - fertilization does not occur






34. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






35. A unique combination of traits that are passed down from one generation to another.






36. Mutation where an extra base is added






37. The complete genetic material contained in an individual






38. The specific location of a gene on a chromosome






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






40. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






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






42. 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.






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






44. 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






45. An evolutionary 'branch' and its daughter 'twigs'






46. Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome






47. Is a base found in DNA and RNA. In DNA its partner is Thymine. In RNA its partner is Uracil






48. T or F a codon consist of three nucleotides






49. When zygote does not complete development or is physically weaker than normal






50. Gradual evolution within a lineage