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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 number of times an allele appears in a population






2. The complete genetic material contained in an individual






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






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






5. Ribosomal RNA; type of RNA that makes up part of the ribosome






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






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






8. A codon is made of...






9. The evolutionary process by which a species becomes better suited to its niche.






10. Pea plants






11. Organ no longer serves a function






12. Independent segregation of genes during the formation of gametes






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






14. The inherited characteristic often masked by the dominant characteristic and not seen in an organism. e.g. Tt plant will still be tall. Where T is the dominant trait for tall and t is the recessive trait for small.






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






16. A population partially isolated from other populations of the same species






17. A group of organisms whose members are sufficiently alike to be able to reproduce and produce fertile offspring and who are unable to reproduce with other such groups






18. Selection against one end of a range of variation - resulting in a progressive change in allele frequency






19. Proteins are made of...






20. Selection for the ability to obtain a mate






21. Situation in which allele frequencies remain constant






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






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






24. The final product of transcription is...






25. Describes the existence of a prezygotic reproductive barrier between two species as a result of them occupying or breeding in different habitats within the same general geographical area






26. 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.






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






28. A fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found






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






30. 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






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






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






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






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






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






36. A trait that masks the expression of another trait






37. A change or error in the DNA sequence






38. A DNA double helix is held together in the center by between nitrogenous bases






39. 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.






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






41. An evolutionary 'branch' and its daughter 'twigs'






42. Copying the code from DNA onto mRNA






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






44. A change in the base sequence of a gene






45. Building block of a protein






46. Dna moves during electrophoresis because of...






47. Is the evolutionary process whereby a population becomes better suited to its habitat






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






49. A group of organisms of the same species occupying a given area.






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







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