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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. 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.






2. 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






3. Are noncoding sequences in the gene that are removed from RNA after transcription






4. Translation occurs in the...






5. DNA is made of...






6. Three mRNA nucleotides that code for a specific amino acid






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






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






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






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






11. Describes the isolation of a physical barrier e.g. body of water (ocean) or mountains






12. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






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






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






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






16. Movement of organisms ro of from a population






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






18. Cross where you cross unknown genotype with a recessive






19. The complete genetic material contained in an individual






20. Relatively rapid proliferation from an ancestral type into new types which fill a diversity of ecological niches






21. Which structure contains anticodons






22. Evolutionary process in which a species or related species folllow different evolutionary paths to eventually become less related






23. 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






24. Mating of 2 oism that differ in 2 characters






25. The comparison of the structures of different organisms






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






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






28. 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






29. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






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






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






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






33. Identical alleles for a gene






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






35. What does DNA stand for...






36. Selection for the ability to obtain a mate






37. Hybrid is sterile so biologically unfit






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






39. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






40. A change in the base sequence of a gene






41. Science dealing with DNA and protein synthesis of living organisms. Manipulation of DNA.






42. How often a particular gene occurs in the population






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






44. Another term for pure breeding






45. Any indirect evidence of life preserved as an impression in rock; trails - footprints - tracks - burrows - and bite marks






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






47. Any agent that can cause a change in DNA






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






49. A point of overlap of paired chromatids at which fusion and exchange of genetic material (crossing over) occurs during prophase I of meiosis.






50. Determined the complete double helical structure of DNA