DNA.mutation.technology.docx

Mitosis uses atp as an energy source to move

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c. mitosis uses ATP as an energy source to move chromosomes d. Spindle fiber formation signals the end of metaphase e. Spindle fibers pull on metaphase chromosomes from both sides 70. During meiosis, individuals of a particular species produce haploid cells containing 18 chromosomes. How many chromosomes are found in a diploid cell belonging to an individual of the same species? a. 9 d. 54 b. 18 e. 72 c. 36 71- 73 The gene for a certain protein has been isolated and sequenced from five different species. During their evolution from a common ancestor, these species have undergone only single nucleotide mutations. A partial DNA sequence from each of the five species is I. 3’……. AGTAC…… 5’ II. 3’ ….. AGTTC……..5’ III. 3’ ……AGTAT……..5’ IV. 3’…….TGTTC……..5’ V. 3’……..ACTTC…….5’ 71. The sequence 5’…..UGAAG…3’ would most likely represent an RNA sequence transcribed from which of the following species? a. I d. IV b. II e. V c. III 72. Which of the following species would require the fewest point mutations in the original sequences in order to give rise to the new sequence 3’ GGTAT… 5’? a. I d. IV b. II e. V c. III 73. Which is most likely to be the oldest species if 3’……. AGAAC …5’ were the partial DNA sequence of the common ancestor of the group? a. I d. IV b. II e. V c. III
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