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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 organism with a genotype of AA classified as?
  1. homozygous recessive
  2. heterozygous recessive
  3. heterozygous dominant
  4. homozygous dominant
Grade 9 DNA, RNA, and Genetics
The process that involves making copies of DNA is
  1. transcription.
  2. translation.
  3. replication.
  4. xeroxing.
Grade 9 DNA, RNA, and Genetics
Jasmine is working in the lab to analyze a nucleic acid. She finds that 33% A, 17 % G, 17% T, and 33% C. The nucleic acid must be
  1. a single-stranded DNA.
  2. a double-stranded DNA.
  3. a double-stranded RNA.
  4. a single-stranded RNA.
Grade 9 DNA, RNA, and Genetics
What is the name of the process by which DNA is converted to RNA?
  1. replication
  2. transcription
  3. translation
  4. copying
Grade 9 DNA, RNA, and Genetics
What is DNA made up of?
  1. phosphate
  2. deoxyribose
  3. A, C, T, or G
  4. all of the above
Grade 9 DNA, RNA, and Genetics
The nucleotide sequence of an RNA strand complementary to GTAGTCA is
  1. UATUAGA.
  2. ACGACTG.
  3. CAUCAGU.
  4. CATCCAGT.
Grade 9 DNA, RNA, and Genetics
During what period does a cell duplicate its DNA?
  1. mitosis
  2. cytokinesis
  3. S phase of interphase
  4. G2 phase of interphase
Grade 9 DNA, RNA, and Genetics
The enzyme that helps transcribe a strand of DNA is
  1. DNA polymerase.
  2. RNA polymerase.
  3. ligase.
  4. lactase.
Grade 9 DNA, RNA, and Genetics
Which description accurately describes the process of genetic engineering?
  1. using ecosystem DNA
  2. studying DNA structures and functions
  3. manipulation and use of DNA structures
  4. biological research of DNA and mRNA strands
Grade 9 DNA, RNA, and Genetics
All the chromosomes other than the X and Y chromosomes are known as
  1. autosomes.
  2. sex chromosomes.
  3. sister chromosomes.
  4. homologous chromosomes.
Grade 9 DNA, RNA, and Genetics
The codon AUG, which codes for the amino acid methionine, also serves as a
  1. lac operon.
  2. promoter.
  3. stop codon.
  4. start codon.
Grade 9 DNA, RNA, and Genetics
This image appears in a biology textbook.
Pedigree Chart
Which term best identifies the image?
  1. cladogram chart
  2. dichotomous key
  3. phylogenetic tree
  4. pedigree diagram
Grade 9 DNA, RNA, and Genetics
What sex chromosomes are found in human females?
  1. XY
  2. XX
  3. YY
  4. XN
Grade 9 DNA, RNA, and Genetics
Which statement regarding linked genes is correct?
  1. Two genes in close proximity on the same chromosome tend to be inherited together and are considered linked.
  2. The closer together genes are found on the same chromosome, the more likely they will be to recombine with other genes.
  3. Linked genes are commonly used as an example to support Mendel's law of independent assortment.
  4. All of the above
Grade 9 DNA, RNA, and Genetics
                are used to trace the history of traits among relatives.
  1. Punnett squares
  2. Cladograms
  3. Pedigrees
  4. Carriers
Grade 9 DNA, RNA, and Genetics
In what process is DNA used as a template to form mRNA?
  1. meiosis
  2. replication
  3. transcription
  4. translation
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