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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. Predicts the possible outcome of a genetic cross.






2. Embryos of similar organisms have very similar early development indicating similar DNA at work






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






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






5. A type of barrier between species; the species remain isolated because male and femal gametes of the different species cannot fuse - or they die before they unite.






6. Innate trait; shared ancestry






7. Situation in which allele frequencies remain constant






8. A taxon originating from and including a single common ancestor






9. Chromosomes that determine the sex of an individual. These are X for female and Y for male. The female egg is an X while the male sperm can be X or Y






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






11. 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.






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






13. Any preserved remains of an organism from the past. Usually found in sedimentary rock.






14. Synonym for protein; chain of amino acids






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






16. Speciation which does not involve a period of geographical separation






17. Physical characteristics of an organism based on its genotype. e.g. Plant that has a genotype of TT will have a phenotype of Tall.






18. 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






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






20. Structure present in an organism however does NOT have a known function. May link organisms with similar vestigial structures. Example: appendix - coccyx bone - whale leg bones.






21. Disappearance of a species from all parts of its geographical range






22. The region of the chromosome that holds the two sister chromatids together during mitosis






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






24. Separates DNA by size






25. Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest






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






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






28. Messenger RNA; type of RNA that carries instructions from DNA in the nucleus to the ribosome






29. 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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30. Which structure contains anticodons






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






32. Different alleles for a gene






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






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






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






36. The comparison of the structures of different organisms






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






38. A codon is made of...






39. Ribosomes are made of...






40. 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






41. Evolution of living things - based on evidence from the past and present.






42. Three dimensional shape of organism made from a mold. May be created with plaster or over time with minerals.






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






44. 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






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






46. Organ that serves no useful function in an organism






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






48. 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.






49. During transcription an RNA molecule is formed






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