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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. The number of times an allele appears in a population






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






3. Mating of 2 oism that differ in 2 characters






4. Separation of species or populations so that they cannot interbreed and produce fertile offspring






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






6. Change to a chromosome in which part of the chromosome is repeated






7. Cross where you cross unknown genotype with a recessive






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






9. Organism is preserved at very low temperatures. Preservation of both hard and soft parts can occur.






10. Ribosomes are made of...






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






12. Separates DNA by size






13. A change or error in the DNA sequence






14. Proteins are made of...






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






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






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






18. How many codons are needed to specify three amino acids






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






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






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






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






23. What happens during the process of translation






24. Determined the concept of complementary base pairing






25. Layers of compressed sedimentary rock demonstrate the order or sequence at which events occurred. Cannot delineate the exact point of time - but is able to distinguish the order of events.






26. Hybrid is sterile so biologically unfit






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






28. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






29. Is a sequence of DNA that codes for a protein and thus determines a trait. This is because the sequence of bases code for certain proteins.






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






31. A copy of a gene is made during a process called this






32. Recognize and cut DNA at specific sequences usually palindromes






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






34. Trait evolves overtime; NO common ancestry






35. The complete genetic material contained in an individual






36. Situation in which allele frequencies remain constant






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






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






39. One of the identical rods of a chromosome.






40. Era of recent life that began about 66 million years ago and continues today; includes the first appearance Hominids






41. Any agent that can cause a change in DNA






42. When F1 is fully fertile but F2 has low fertility (rice - cotton)






43. 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






44. Speciation preceded by a period of geographical isolation






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






47. 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.






48. Periods of little adaptive change






49. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






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