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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. Process in which DNA is duplicated






2. 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.






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






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






5. What does DNA stand for...






6. Dna moves during electrophoresis because of...






7. Natural selection that causes the frequency of a particular allele to move in one direction






8. Process by which one species gives rise to two or more species






9. Speciation preceded by a period of geographical isolation






10. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






11. 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.






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






13. Predicts the possible outcome of a genetic cross.






14. Trait where heterozygous is a blending of two alleles






15. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






16. Building block of a protein






17. Mutation where an extra base is added






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






19. Change in a DNA sequence that affects genetic information






20. 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






21. Pea plants






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






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






24. Is a trait that is more expressed than another trait. Is written in capital letters for Genotype. E.g Tall genotype is TT or Tt where T is the allele for tall trait and t is the trait for small. T will be expressed more.






25. The gradual changes in gene frequencies in a population due to random events






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






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






28. Because of base pairing in DNA the amount of






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






30. A body cell






31. 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






32. You mate the unknown genotype with an organism showing the recessive trait. If any of the offspring show the recessive trait - the original unknown parent was heterozygous. If no recessive trats show up - the original parent was homozygous.






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






34. Which structure contains anticodons






35. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






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






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






38. Is found in DNA






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






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






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






42. Hybrid is sterile so biologically unfit






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






44. 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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45. A change in the base sequence of a gene






46. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






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






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






49. Reciprocal evolution in two species as a result of the selection pressure each imposes upon the other






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







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