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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 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






2. Populations that can interbreed with neighboring populations but not with populations separated by larger geographical distances






3. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






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






6. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






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






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






9. 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.






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






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






12. Transcrition occurs in the...






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






14. 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.






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






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






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






18. Predicts the possible outcome of a genetic cross.






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






20. Copying the code from DNA onto mRNA






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






22. Proteins are made of...






23. Situation in which allele frequencies remain constant






24. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






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






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






27. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






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






30. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






31. Synonym for protein; chain of amino acids






32. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






33. Actual remains of an organism such as bones - teeth - shells - etc.






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






35. A DNA double helix is held together in the center by between nitrogenous bases






36. Consists of all genes - including all the different alleles - that are present in a population






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






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






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






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






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






42. Method of replication that implies that each new strand of DNA is half original and half new






43. Visual expression of a trait






44. The backbone of DNA consist of...






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






46. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






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






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






49. Pea plants






50. A trait that masks the expression of another trait