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Tenth Grade (Grade 10) DNA, RNA, and Genetics Questions

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Grade 10 DNA, RNA, and Genetics
What is the enzyme that unzips the DNA for replication?
  1. DNA ligase
  2. helicase
  3. DNA polymerase
  4. lactase
Grade 10 DNA, RNA, and Genetics
A DNA strand has the bases A A G C C A. What are the bases on its complementary strand?
  1. AAGCCA
  2. ACCGAA
  3. TTCGGT
  4. CCATTC
Grade 10 DNA, RNA, and Genetics
Mendel's law of dominance states that
  1. an organism will always be stronger than its parents.
  2. only the alleles from the male parent will appear in the phenotype of the offspring.
  3. traits will disappear from phenotypes during the dominant generation and reappear during the recessive generation.
  4. if an organism inherits two different alleles, only the dominant one will show up in its phenotype.
Grade 10 DNA, RNA, and Genetics
According to the central dogma, how does genetic information flow through a cell?
  1. RNA to mRNA to protein to DNA
  2. DNA to RNA polymerase to mRNA to protein
  3. Protein to mRNA to RNA polymerase to DNA
  4. DNA to mRNA to RNA polymerase to protein
  5. mRNA to RNA to protein to DNA
Grade 10 DNA, RNA, and Genetics
What are the alternate forms of a gene?
  1. phenotypes
  2. alleles
  3. inherited traits
  4. traits
  5. genotypes
Grade 10 DNA, RNA, and Genetics
The process by which the genetic code of DNA is copied into a strand of RNA is
  1. translation.
  2. transcription.
  3. transformation.
  4. replication.
Grade 10 DNA, RNA, and Genetics
A Punnett square is a helpful tool to geneticists. What information is placed at the outside top and side of the Punnett square?
  1. possible offspring phenotypes
  2. possible offspring genotypes
  3. possible alleles in the gametes of the parents
  4. genotype ratio
  5. phenotype ratio
Grade 10 DNA, RNA, and Genetics
What nucleotide replaces thymine in RNA during transcription?
  1. cytosine
  2. ulcer
  3. guanine
  4. uracil
Grade 10 DNA, RNA, and Genetics
A chart that traces the inheritance of a trait in a family is a(n)
  1. pedigree.
  2. karyotype.
  3. genome.
  4. autosome.
Grade 10 DNA, RNA, and Genetics
What is the term for the breeding of parents when only one trait is being investigated?
  1. law of segregation
  2. monohybrid cross
  3. dihybrid cross
  4. Punnett square
Grade 10 DNA, RNA, and Genetics
Manually changing the DNA of an organism is
  1. genetic engineering.
  2. hybridization.
  3. selective breeding.
  4. inbreeding.
Grade 10 DNA, RNA, and Genetics
Phenotype refers to an organism's
  1. genetic code.
  2. physical appearance.
  3. ratio.
  4. parents.
Grade 10 DNA, RNA, and Genetics
What are the nucleotide bases?
  1. phosphate, double helix, and DNA
  2. DNA, adenine, thymine, and replication
  3. adenine, thymine, cytosine, and guanine
  4. none of the above
Grade 10 DNA, RNA, and Genetics
Changes in the DNA sequence that affect genetic information are known as
  1. replications.
  2. mutations.
  3. transformations.
  4. prokaryotes.
Grade 10 DNA, RNA, and Genetics
The genetic information carried by an individual is the
  1. genotype.
  2. dominant.
  3. recessive.
  4. phenotype.
Grade 10 DNA, RNA, and Genetics
The process of copying DNA is
  1. meiosis.
  2. replication.
  3. crossing over.
Grade 10 DNA, RNA, and Genetics
If a characteristic is sex-linked, it
  1. occurs most commonly in males.
  2. occurs only in females.
  3. can never occur in females.
  4. is always fatal.
Grade 10 DNA, RNA, and Genetics
What is the purpose of tRNA?
  1. to carry amino acids to the mRNA
  2. to reach a stop codon
  3. to replicate RNA
  4. to code the proteins
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