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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. 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






2. The signal on a mRNA molecule that designates the end of the coding sequence is called the...






3. Individual that is heterozygous for two traits; shows the phenotype governed by the dominant alleles but carries the recessive alleles






4. 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.






5. How often a form of a gene appears in a gene pool






6. Organ that serves no useful function in an organism






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






8. Which type of Rna functions as a blue print of the genetic code






9. A limb with five digits (fingers)






10. Transfer RNA; type of RNA that carries amino acids to the ribosome






11. Another term for pure breeding






12. Is a base found in DNA and RNA. This base pairs with Cytosine in DNA






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






14. All the factors in an organism's surroundings that can potentially affect it






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






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






17. A nucleotide of RNA is made of...






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






19. 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.






20. During transcription an RNA molecule is formed






21. An ancestor that two or more descendants have in common






22. 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.






23. Is active during transcription






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






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






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






27. T or F If a nucleic acid contain uracil it is DNA






28. 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






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






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






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






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






33. Pea plants






34. Genes contain instructions for assembling






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






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






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






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






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






40. Gradual evolution within a lineage






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






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






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






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






45. 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






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






47. The backbone of DNA consist of...






48. Gene

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






50. Found only in that country