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College DNA, RNA, and Genetics Questions

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College DNA, RNA, and Genetics
In a mating between two heterozygotic individuals (e.g. Rr X Rr) with alleles that show a complete dominance and recessive relationship between the alleles which statement would be true?
  1. There is a phenotypic difference between Rr and RR individuals.
  2. The probability of having individuals that have the genotype RR is 50%
  3. The probability of having indivuals that have the genotype Rr is 25%
  4. Phenotypically there is no difference between the RR and Rr indivduals
College DNA, RNA, and Genetics
Crossing over can typically                                                                                     .
  1. be expected to increase the variety of gametes produced
  2. involve the exchange of segments of chromosomes belong to different homologous pairs
  3. occurs during mitosis
  4. involves only cells of somatic tissue
College DNA, RNA, and Genetics
What is genetic mutation?
  1. Dna complication
  2. Mutations that occur only in an egg or sperm cell, or those that occur just after fertilization
  3. any alteration in the inherited nucleic acid sequence of the genotype of an organism
  4. all of the above
College DNA, RNA, and Genetics
Recombinant DNA                                                                               .
  1. is pollination of one plant by another of the same species
  2. is cross-pollination of one plant by a different species
  3. is the merging of DNA from unrelated organisms to create new genetic varieties
  4. is assembled in the lab from mononucleotides
  5. was part of the green revolution of the 1960s
College DNA, RNA, and Genetics
Based on the principle of independent assortment, which of the following statements is true?
  1. a male child is more likely to inherit blue eyes from his father than his mother.
  2. a child is more likely to inherit blue eyes from his mother if he also inherits his brown hair.
  3. a child will inherit brown hair from his mother rather than red hair from his father if brown hair is more adapted to the environment
  4. a child's inheritance of blue eyes is not dependent on his inheritance of his father's red hair
College DNA, RNA, and Genetics
A/an                   is a (heritable) change in the genetic material (DNA).
  1. adaptation
  2. gene
  3. phenotype
  4. mutation
  5. none of the above
College DNA, RNA, and Genetics
All the genetic information of an organism is called its                .
  1. Gene
  2. Chromosome
  3. Karyotype
  4. Genome
  5. Nucleolus
College DNA, RNA, and Genetics
In eukaryotic cells, transcription cannot begin until what occurs?
  1. the two DNA strands have completely separated and exposed the promoter
  2. several transcription factors have bound to the promoter
  3. the 5' caps are removed from the mRNA
  4. the DNA introns are removed from the template
College DNA, RNA, and Genetics
What is the process by which RNA is copied from DNA?
  1. Translation
  2. Replication
  3. Transcription
  4. Fabrication
  5. Processing
College DNA, RNA, and Genetics
RNA differs from DNA in all of the following EXCEPT                                                                                     .
  1. Ribose sugar is used rather than deoxyribose sugar
  2. Is single-stranded rather than double stranded
  3. Is generally a few thousand nucleotide bases rather than millions of bases in length
  4. Uracil is used rather than thymine
  5. All of the above are differences between RNA and DNA
College DNA, RNA, and Genetics
For what can CRISPRs be used?
  1. modify single genes
  2. delete whole chromosomes
  3. induce inversions of large segments of the shromosomes
  4. create translocations
College DNA, RNA, and Genetics
Restriction endonuclease is the protein-based catalyst that can                                      .
  1. cut DNA strands open at specific site
  2. link two DNA strands together
  3. replicate DNA by the pairing rules
  4. degrade antibiotics effectively
College DNA, RNA, and Genetics
Which of the following is not an important way that DNA affects phenotype?
  1. DNA in regulatory genes determines when protein coding genes are expressed
  2. DNA is sometimes used as a structural protein in cell walls
  3. DNA affects the structure of several types of RNA
  4. DNA in protein coding genes affects protein structure
College DNA, RNA, and Genetics
In order to carry foreign DNA into the native cell, we need to use                .
  1. DNA ligase
  2. DNA polymerase
  3. DNA marker
  4. DNA vector
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