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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. A body cell






2. Because of base pairing in DNA the amount of






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






4. Selection acting against the middle of a range of variation






5. What happens during the process of translation






6. The comparison of the structures of different organisms






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






8. Predicts the possible outcome of a genetic cross.






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






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. Shows how the embryos of different groups resemble each other at particular stages. Similarities indicate groups may share a common ancestor






12. 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






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






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






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






16. The region of the chromosome that holds the two sister chromatids together during mitosis






17. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






18. Which structure contains anticodons






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






20. DNA that is coiled around proteins






21. How often a particular gene occurs in the population






22. Group of similar organisms that can breed and produce fertile offspring






23. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






24. Chromosomes are collections of many






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






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






27. T or F a codon consist of three nucleotides






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






29. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






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






31. 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






32. Gradual evolution within a lineage






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






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






35. A change or error in the DNA sequence






36. Mating of 2 oism that differ in 2 characters






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






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






39. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






40. Determined the concept of complementary base pairing






41. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






42. Mating of an individual of unknown genotype but dominant phenotype w/ a homozygous recessive individual






43. process in which homologous chromosomes exchange portions of their chromatids during meiosis.






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






45. A change in the base sequence of a gene






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






47. The specific location of a gene on a chromosome






48. 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.






49. 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.






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