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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. Which structure contains anticodons






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






3. Found only in that country






4. 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






5. When a few individuals become isolated from a larger population - this smaller group may establish a new population whose gene pool is different from their source population.






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






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






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






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






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






11. Mutation where an extra base is added






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






13. The specific location of a gene on a chromosome






14. 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.






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






16. A model for the evolution of different froms over a long period of time but with only slight chchanges occring between successive generations






17. Earth's history organized into four eras: Precambrian - Paleozoic - Mesozoic - and Cenozoic






18. The environmental factors that favour certain phenotypes






19. A pairing where the parent plants differ in only one character.






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






21. During transcription an RNA molecule is formed






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






23. Hybrid is sterile so biologically unfit






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. Visual expression of a trait






26. 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.






27. 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






28. A distinct population of a species that varies from other populations of the same species.






29. The movement of individuals into an area






30. The study of the structures of different organisms - looking at homologous parts






31. Structures in different but related species that are derived from the same ancestral structure but now serve different purposes.






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






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






34. Determined the complete double helical structure of DNA






35. DNA is made of...






36. Situation in which allele frequencies remain constant






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






38. What happens during the process of translation






39. A nucleotide of RNA is made of...






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






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






42. Movement of organisms ro of from a population






43. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

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






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






46. The comparison of the structures of different organisms






47. Evolution resulting from small specific genetic changes that can lead to a new subspecies






48. Process in which DNA is duplicated






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






50. Evolution of superficial phenotypic similarity of form as a result of similar selection pressures