Test your basic knowledge |

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 codon is made of...






3. What is one benefit for having two strands of DNA?






4. Is any chromosome that is not a sex chromosome.






5. The study relating the evolution of new charateristics to changes in the genes controlling development






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






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






8. 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






9. 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.






10. 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






11. A base found in DNA (but not in RNA). This base pairs with Adenine.






12. T or F a codon consist of three nucleotides






13. Translation occurs in the...






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






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






16. Proteins are made of...






17. Used radioactive sulfur and radioactive phosphorus to determine that DNA is the genetic material - by demonstrating that it is DNA that is injected by bacteriophages into bacterial cells during infection






18. Trait where heterozygous is a blending of two alleles






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






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






21. Pea plants






22. Organisms with a similar underlying structure - but different function. Example: bird - bat and dolphin 'arm'. Shows a common ancestral link.






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






24. Mutation where an extra base is added






25. 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






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






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






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






29. A limb with five digits (fingers)






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






31. Movement of organisms ro of from a population






32. Two alternative forms of a gene e.g Tall vs Short






33. A geographic gradient in the extent to which a character is developed in a species






34. Gradual evolution within a lineage






35. The movement of individuals into an area






36. Selection acting against the middle of a range of variation






37. Which structure contains anticodons






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






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






40. Breeding organisms with specific traits in order to produce offspring with identical traits






41. A change or error in the DNA sequence






42. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






43. Organ no longer serves a function






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






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






46. Disappearance of a species from all parts of its geographical range






47. Is found in DNA






48. Mating of 2 oism that differ in 2 characters






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






50. During transcription an RNA molecule is formed