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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. Selection for the ability to obtain a mate






2. Any agent that can cause a change in DNA






3. 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






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






5. Visual expression of a trait






6. Impression made from a organism in soft material such as sand or mud.






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






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






9. Another term for pure breeding






10. 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






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






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






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






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






15. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






16. Closely related species occupying different habitats - niches preventing them from interbreeding






17. All the genes in a population. genes are added by reproduction and immigration and lost by death and emigration






18. Translation occurs in the...






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






20. Trait evolves overtime; NO common ancestry






21. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene






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






23. The comparison of the structures of different organisms






24. DNA is made of...






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






26. What does DNA stand for...






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






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






29. A distinct population of a species that varies from other populations of the same species.






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






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






32. During transcription an RNA molecule is formed






33. A group of organisms of the same species occupying a given area.






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






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






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






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






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






39. Breeding organisms with specific traits in order to produce offspring with identical traits






40. Building block of a nucleic acid (DNA and RNA)






41. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






42. The number of times an allele appears in a population






43. A geographic gradient in the extent to which a character is developed in a species






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






45. The specific location of a gene on a chromosome






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






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






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






49. A combining of genes or characters different from what they were in the parents






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