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

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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
Grade 9 DNA, RNA, and Genetics
If a trait shows more than two phenotypes, that trait could be controlled by                                                                        .
  1. One gene with a dominant and recessive allele
  2. One gene with more than two alleles
  3. One gene wiht two alleles tha show incomplete dominance or co-dominance
  4. All of the above
  5. B or C
Grade 9 DNA, RNA, and Genetics
If child has a trait that neither of the parents have, then                                                              .
  1. the child must have inherited the trait from the grandparents
  2. the trait is recessive
  3. both parents are heterozygous for the trait
  4. B and C
Grade 9 DNA, RNA, and Genetics
In order to produce a normal baby boy, an egg must be fertilized with a sperm containing which of these?
  1. An X chromosome
  2. An X and Y chromosome
  3. Two X chromosomes
  4. A Y chromosome
Grade 9 DNA, RNA, and Genetics
What can a karyotype can determine?
  1. the sex of the person
  2. the color of the eyes of the person
  3. if there is something wrog with the number or structure of the chromosomes
  4. all of the above
  5. a and c
Grade 9 DNA, RNA, and Genetics
Which of the following describes the importance of tRNA in translation?
  1. tRNA brings the proper amino acids for a series of codons to form a polypeptide chain
  2. tRNA brings the proper proteins to rRNA to bind together to form an enzyme
  3. tRNA stays in the nucleus to continue making copies of DNA
  4. tRNA does all of the above at different times
Grade 9 DNA, RNA, and Genetics
When did Mendel did 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
The process by which RNA is made from DNA is called
  1. translation
  2. transcription
  3. replication
  4. respiration
Grade 9 DNA, RNA, and Genetics
Where does DNA replication occur?
  1. The Nucleus
  2. The Cell Membrane
  3. The Stem Cells
Grade 9 DNA, RNA, and Genetics
Grade 9 DNA, RNA, and Genetics
Which of the following is NOT a characteristic of DNA?
  1. deoxyribose sugar
  2. single stranded
  3. double stranded
  4. four nitrogenous bases
Grade 9 DNA, RNA, and Genetics
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