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






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






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. Synonym for protein; chain of amino acids






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






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






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






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






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






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






11. DNA that is coiled around proteins






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






13. Any agent that can cause a change in DNA






14. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






15. The banding pattern of a persons DNA after being cut and run on gel is called






16. Which structure contains anticodons






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






18. Periods of little adaptive change






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






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






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






22. Organ that serves no useful function in an organism






23. Recognize and cut DNA at specific sequences usually palindromes






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






25. Uses metamorphic or igneous rock - calculates the age of an object by assessing the amount of radioactive element still present in the organism. Radioactive elements are slowly lost over time because of decay.






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






27. The specific location of a gene on a chromosome






28. Is active during transcription






29. The environmental factors that favour certain phenotypes






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






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






32. Process by which a ribosome uses the code on mRNA to make proteins






33. 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






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






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






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






37. Gene


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






39. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






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






41. 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






42. A type of natural selection in which genetic diversity decreases as the population stabilises on a particular trait value






43. Periods of rapid evolution punctuated by periods of little change






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






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






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






47. Determined the concept of complementary base pairing






48. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






49. Predicts the possible outcome of a genetic cross.






50. The final product of transcription is...