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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. Organ no longer serves a function






2. The movement of individuals into an area






3. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






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






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






6. A change in the base sequence of DNA; the ultimate source of new alleles






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






8. When competition causes two closely related species to become more different in regions where their ranges overlap






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






10. The study of the structures of different organisms - looking at homologous parts






11. One of the identical rods of a chromosome.






12. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






13. Trait evolves overtime; NO common ancestry






14. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






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






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






17. 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






18. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






20. Embryos of similar organisms have very similar early development indicating similar DNA at work






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






22. A change or error in the DNA sequence






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






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






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






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






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






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






29. Speciation preceded by a period of geographical isolation






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






31. Features that are superficially similar but have different modes of development






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






33. A base found in DNA (but not in RNA). This base pairs with Adenine.






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






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






36. A codon is made of...






37. Two alternative forms of a gene e.g Tall vs Short






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






39. 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






40. DNA that is coiled around proteins






41. DNA is made of...






42. Dna moves during electrophoresis because of...






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






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






45. Mating of 2 oism that differ in 2 characters






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






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






48. Gradual evolution within a lineage






49. What happens during the process of translation






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