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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. 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.






2. Speciation preceded by a period of geographical isolation






3. Method of replication that implies that each new strand of DNA is half original and half new






4. It means chromosomes are paired. One of each chromosome in a pair originates from the father and one from the mother. They affect the same trait - but don't necessarily cause the same expression of the trait.






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






6. 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.






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






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






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






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






11. Impression made from a organism in soft material such as sand or mud.






12. Hybrid is sterile so biologically unfit






13. Process by which a ribosome uses the code on mRNA to make proteins






14. The complete genetic material contained in an individual






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






16. Building block of a protein






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






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






19. 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






20. Is active during transcription






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






22. During transcription an RNA molecule is formed






23. Natural disaster eliminates most of the population - members left contribute the alleles for the new population.






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






25. Dna moves during electrophoresis because of...






26. 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






27. Form of reproductive isolation in which tere are differences in species courtship behavior






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






29. Is a base found in DNA and RNA. Cytosine pairs with Guanine in DNA






30. Ribosomes are made of...






31. Selection for the ability to obtain a mate






32. The molecules responsible for bringing amino acids to the ribosome during protein synthesis are






33. Translation occurs in the...






34. Copying the code from DNA onto mRNA






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






36. Process by which one species gives rise to two or more species






37. Organ no longer serves a function






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






39. A type of protein molecule found in the chromosomes of eukaryotic cells but not prokaryotic cells






40. When zygote does not complete development or is physically weaker than normal






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






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






43. 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






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






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






46. Separates DNA by size






47. Gene

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






49. Mutation where an extra base is added






50. An equilibrium in the occurence of two or more different froms within the same population usually caused by different allele combiinations of a gene