42. Polyploidy refers to a an increase in the copy number of chromosomes b. an e

Question

42. Polyploidy refers to a an increase in the copy number of chromosomes b. an event that happens most commonly in plants c. an event that results in instant speciation d. can cause genomes to increase to 3n or 4n e. Yep. All true Copy numbers of certain genes on chromosomes can occur. Match the alteration with the subsequent change in gene copy numbers 43. Deletions A gene order is changed. 44 Duplications B genes are located on "wrong" chromosomes. 45 Inversions C.multliple gene copies are added 46. Reciprocal Dgenes are removed Translocations 47. The bacteriophage made an ideal model for identifying the cellular material responsible for inheritance because a. they can infect bacteria b. they contain the only 2 options; DNA or proteins c. they are viruser d. they are creepy, yet cool, looking e. they are alive. 48. The experiment proved that only 1 component could be responsible for inheritance because a. only 1 of the components was found associated with the cell. b. it could be radioisotope labeled, while the other could not. c. both components had a 50.50 change of survival d. the bacteria showed typical Mendelian inheritance patterns e. the experiment did not actually prove anything 49. The evidence that, in DNA, nucleotide bases pair in a specific way includes a. the spacing across the double helix is constant b. the fact that A T and C G c. one of the above pairs is a purine d. the other of the above pairs is a pyrimidine e. all support the model of DNA

Explanation / Answer

42. Option- E , all true

Polyploidy is condition in which more then two sets of chromosomes are present (more than 2n) , in which chromosomal copy number increases and that leads to instant speciation.

43. Deletion - D. Genes are removed

44. Duplications - C. Multiple gene copies are added

45. Inversions - A. Gene order is changed

46. Reciprocal translocation s - B. Genes are located on wrong chromosomes

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