Test your basic knowledge |

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. A process that results in an allele having a different probability of remaining in the gene pool compared with that of another allele






2. Another term for pure breeding






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






4. DNA is made of...






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






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






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






8. Independent segregation of genes during the formation of gametes






9. Evolution of the earth - which is hypothesized to have been formed over 4.6 billion years ago.






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






11. A change in the base sequence of DNA; the ultimate source of new alleles






12. The comparison of the structures of different organisms






13. Chromosomes are collections of many






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






15. Ribosomes are made of...






16. Form of reproductive isolation in which two populations reproduce at different times






17. Determined the complete double helical structure of DNA






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






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






20. Middle life (245-144 million years ago); rise of mammals and dinosaurs; the rise of birds; extinction of dinosaurs - rise of flowering plants






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






22. Is active during transcription






23. Describes a cell - nucleus - or organism that has only one set of unpaired chromosomes






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






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






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






27. Types of rocks formed after exposure to very high heat. Because of the high temperatures - fossils are not able to be recovered from these types of rocks. Absolute or radioactive dating is possible - however.






28. Periods of little adaptive change






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






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






31. What does DNA stand for...






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






33. 2 alleles for a character separate during the formation of gametes - so that each gamete only carriers one allele for each character

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


34. The number of times an allele appears in a population






35. 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






36. It is the time from when the Earth formed and simple life - forms evolved (and it is the longest era)






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






38. Predicts the possible outcome of a genetic cross.






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






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






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






42. Building block of a protein






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






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






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






46. Large - scale evolutionary changes that take place over long periods of time






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






48. A limb with five digits (fingers)






49. Natural selection that causes the frequency of a particular allele to move in one direction






50. 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.