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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 capacity of an individual of certain genotype to reproduce. It is usually equal to the proportion of the individual's genes in all the genes of the next generation






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






3. DNA that is coiled around proteins






4. 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.






5. Used x ray cyrstallography to create an image of DNA






6. Independent segregation of genes during the formation of gametes






7. Organisms with similar functions - but different underlying structure. Example: bird and insect wing. These structures do NOT show a common ancestral link.






8. Form of reproductive isolation in which structural differences in the anatomy of reproductive organs prevent sperm transfer between individuals of different species






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






10. DNA is made of...






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






12. Determined the concept of complementary base pairing






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






14. Separates DNA by size






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






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






17. Is the genetic makeup of an organism (TT or Tt) ; All the combinations of genes you have for a certain trait.






18. Synonym for protein; chain of amino acids






19. Type of sympatric speciation that occurs when a new species is formed because of a change in microhabitats






20. Type of rock made from small pieces of other rocks and organisms pressed together. Source of fossil preservation. Limited radioactive or absolute dating potential.






21. Movement of alleles into or out of a population due to the migration of individuals to or from the population






22. Innate trait; shared ancestry






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






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






25. 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






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






27. The study of the past and present distribution of species.






28. shape of a DNA molecule formed when two twisted DNA strands are coiled into a springlike structure and held together by hydrogen bonds between the bases.






29. The movement of individuals into an area






30. Change in a DNA sequence that affects genetic information






31. Heteros have a phenotype tintertmediate b/t phenotypes of the 2 homoz






32. 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






33. 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.






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






35. Similar embryological structures in different species - such as gill slits - may demonstrate that these species share a common ancestor.






36. The backbone of DNA consist of...






37. The individuals choice of which mate they will choose. The choice is dependant on what traits the individual finds attractive. e.g some people will want their mates to be smart or pretty.






38. To create a recombinant DNA molecule - one would have to first cut two DNAs with creating before pasting them together






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






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






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






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






43. One of the identical rods of a chromosome.






44. Trait where heterozygous is a blending of two alleles






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






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






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






48. Process in which DNA is duplicated






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






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