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Ninth Grade (Grade 9) DNA, RNA, and Genetics Questions

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Grade 9 DNA, RNA, and Genetics
What is the backbone of the DNA chain?
  1. phosphate groups and sugars
  2. nucleotides
  3. hydrogen bongs and nitrogenous bases
  4. RNA
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Who discovered the double helix structure of DNA?
  1. Erwin Chargaff.
  2. James Watson and Francis Crick.
  3. Rosalind Franklin.
  4. Hershey and Chase.
Grade 9 DNA, RNA, and Genetics
Where is DNA located in a cell?
  1. The Cytoplasm.
  2. The Mitochondria.
  3. The Nucleus.
  4. The Cell Wall.
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
When do cells duplicate their DNA?
  1. During the S Phase of Interphase.
  2. During Mitosis
  3. During the G2 phase of Interphase.
  4. During Cytokinesis.
Grade 9 DNA, RNA, and Genetics
When did Mendel do his investigations in genetics?
  1. with complete knowledge of DNA and chromosomes
  2. before DNA was discovered
  3. at the same time that Watson and Crick were working on their model
  4. using an electron microscope to see the genes he was working with
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
If a man has a sex linked disorder                                               .
  1. haf of his sons could have the disease
  2. all of his daughters will be at least carriers
  3. all of his sons will have the disease
  4. all of his daughters will have the disease
  5. none of the above
Grade 9 DNA, RNA, and Genetics
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