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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. Transcrition occurs in the...






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






3. Another term for pure breeding






4. 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.






5. Because of base pairing in DNA the amount of






6. The independant evolution of similar traits - starting from a similar ancestral condition






7. Geologic period that followed the Precambrian;means 'ancient life' - early life (570-286 million years ago); single cell organisms - shells - mollusks - rise of first vertebrates - rise of land plants - amphibians - insects - seed plants - and trees






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






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






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






11. Impression made from a organism in soft material such as sand or mud.






12. Mating of 2 oism that differ in 2 characters






13. Term used to refer to an organism that has two different alleles for the same trait. e.g Tt is the heterozygous genotype for Tall.






14. 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.






15. Which structure contains anticodons






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






17. The offspring of a cross between two inbred lines within a single species. May also refer to the offspring of across between two species






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






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






20. 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.






21. An evolutionary 'branch' and its daughter 'twigs'






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






23. Human - like species that existed millions of years ago as witnessed through fossil evidence.






24. Cell division that produces reproductive cells or gamates.This occurs in the gonads (testicle and ovaries in animals) Here the chromosome number is halved the original amount. (each new cell has a haploid number = n) All daughter cells are not geneti






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






26. How often a form of a gene appears in a gene pool






27. The number of times an allele appears in a population






28. The complete genetic material contained in an individual






29. Determined the complete double helical structure of DNA






30. Group of individuals of the same species that live in the same area






31. Process in which DNA is duplicated






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






33. Innate trait; shared ancestry






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






35. In the event of a sperm fertilizing an egg of another species - mechanisms that prevent result being fruitful






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






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






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






39. A change or error in the DNA sequence






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






41. Organ no longer serves a function






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






43. An organism that has characteristics resulting from chromosomal alteration. This is a result of crossing over of the chromosomes during Meiosis - mutations and random segregation.






44. A small simple structure (as a fertilized egg) from which new tissue can develop into a complete organism. It is also a cell






45. Synonym for protein; chain of amino acids






46. 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.






47. Separates DNA by size






48. Process by which an organism is slowly turned to stone as the body is replaced by minerals.






49. The enzyme that binds to the promoter region of a gene during transcription is called...






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