DNA double helix does not have which of the following? I. antiparallel configura
ID: 252804 • Letter: D
Question
DNA double helix does not have which of the following? I. antiparallel configuration 2. complementary base pairing 3. major and minor grooves 4. uracil In eukaryotes, what is the DNA wrapped around? I. single-stranded binding proteins 2. sliding clamp 3. polymerase 4. histones Which of the following is the correct order of events in mitosis? A. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. B. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. C. The kinetochore becomes kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides D. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides attached to metaphase plate. Sister chromatids line up at the metaphase plate. The 9Explanation / Answer
A) The correct option is 4.Uracil.
Uracil is one of the four nucleobases in the nucleic acid of RNA .They are represented by the letters A, G, C and U. In RNA, uracil binds to adenine by two hydrogen bonds.
B) The correct option is 4. Histones.
DNA is wrapped around proteins called as histones. The histones are rich in basic amino acids and form an octamer. The DNA is wrapped tightly around the histone core.
2) D. The kinetochore becomes attached to mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides.
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