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






2. 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.






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






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






5. Trait where heterozygous is a blending of two alleles






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






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






8. Hybrid is sterile so biologically unfit






9. A mutation in which one nucleotide is replaced by another nucleotide






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






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






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






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






14. A genetic crosses that involve one trait. e.g TT plant crossed with tt plant has offspring who are heterozygous Tt.






15. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






16. When chromosome is changed by radiation and chemicals - results a permanent structural change in the chromosome - which will no longer be able to pair with its homologous pair. Eg - deletion - duplication - inversion and translocation.






17. 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






18. Periods of little adaptive change






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






20. Situation in which allele frequencies remain constant






21. Synonym for protein; chain of amino acids






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






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






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






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






26. The evolutionary history/geneology of a group of organisms (a tree thingy)






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






28. Similar DNA sequences or protein structures (such as hemoglobin) may link different species to a similar ancestor.






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






30. One of the types of fossils made from hardened tree resin. Preserves both hard and soft parts.






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






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






33. Movement of organisms ro of from a population






34. When F1 is fully fertile but F2 has low fertility (rice - cotton)






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






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






37. 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.






38. The movement of genes between populations as a result of mating of migration






39. Even if the gametes of the two species meet - fertilization does not occur






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






41. Found only in that country






42. Ribosomes are made of...






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






44. Cell division in which the nucleus divides into nuclei containing the same number of chromosomes. Mitosis involves growth and repair and occurs in the body cells.






45. Separates DNA by size






46. A combining of genes or characters different from what they were in the parents






47. The reduction of a population - typically by a natural disaster - such that the surviving population is no longer genetically representative of the original population.






48. Features of different species tat are similar in function but not necessarily in structure and in which the similarity is not the result of common ancestry






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






50. Recognize and cut DNA at specific sequences usually palindromes