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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 comparison of the structures of different organisms






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






3. These prevent fertilization between species e.g. diff breeding season - mating behaviour






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






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






6. A taxon originating from and including a single common ancestor






7. Term used to refer to an organism that has two identical alleles for a particular trait. e.g TT is the homozygous genotype for Tall.






8. Separates DNA by size






9. Of a cell or organism having two sets of homologous chromosomes or twice the haploid number






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






11. Trait where heterozygous is a blending of two alleles






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






13. A change or error in the DNA sequence






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






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






16. Recognize and cut DNA at specific sequences usually palindromes






17. Is found in DNA






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






19. Another name for a gene






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






21. Any agent that can cause a change in DNA






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






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






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






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






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






27. The condition in which there is no change in allele frequencies from generation to generation (i.e. no evolution)






28. DNA is made of...






29. Is active during transcription






30. Periods of little adaptive change






31. Determined the complete double helical structure of DNA






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






33. Pea plants






34. Synonym for protein; chain of amino acids






35. Threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next






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






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






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






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






40. Building block of a protein






41. 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.






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






43. Copying the code from DNA onto mRNA






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






45. Change to a chromosome in which a fragment of the chromosome is removed






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






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






48. Independent segregation of genes during the formation of gametes






49. Actual remains of an organism such as bones - teeth - shells - etc.






50. Determined the concept of complementary base pairing