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College DNA, RNA, and Genetics Questions

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College DNA, RNA, and Genetics
Assume that you have crossed orange flowered daisies with white flowered daisies. The offspring of these plants consists of 360 orange flowered daisies and 340 white flowered daisies. What can you conclude about this trait in daises?
  1. The gene for orange flowers is homozygous and the gene fo white flowers is also homozygous
  2. The gene for flower color in daises exhibits incomplete dominance
  3. The gene for orange flowers and the gene for white flowers are on the same chromosome.
  4. The gene for flower color in daisies exhibits complete dominance.
College DNA, RNA, and Genetics
What is a "locus"?
  1. The region of a chromosome where a particular gene can be found.
  2. The sequence of nucleotides that make up a codon.
  3. The area of a chromosome where the sister chromatids are connected to each other.
  4. The structure formed when a homologous pair of chromosomes line up together before Meiosis.
College DNA, RNA, and Genetics
Chromosomes are made up of                 in the nucleus.
  1. RNA
  2. DNA
  3. proteins
  4. nuclei
College DNA, RNA, and Genetics
What part of the production of gametes is explained by the Law of Independent Assortment?
  1. the separation of chromosomes during meiosis 2 so that each daughter cell contains a copy of every chromosome.
  2. the sorting of chromosomes during meiosis 1 so that each daughter cell contains a random selection of either maternal or paternal chromosomes from each homologous pair.
  3. the separation of sister chromatids during meiosis 1 so that each daughter cell contains half the number of original chromosomes.
  4. the sorting of sister chromatids during meiosis 2 so that each daughter cell contains twice the number of original chromosomes.
College DNA, RNA, and Genetics
Which of the following statements regarding ribosome function in protein synthesis is true?
  1. They synthesize the protein in the nucleus
  2. The dopy the DNA from the nucleus and move it to the cytoplasm
  3. Their anticodons bind to the mRNA
  4. They synthesize the protein by reading the copy of the mRNA
College DNA, RNA, and Genetics
What is biotechnology?
  1. DNA that has been altered to contain genes or portions of genes from different organisms
  2. Manually adding new DNA to an organism
  3. Plants and animals that express DNA that has been modified or derived from other species.
  4. The use of alteration of organism to produce food, drugs, and other goods
College DNA, RNA, and Genetics
In a nucleosome, what is the DNA wrapped around?
  1. histones
  2. ribosomes
  3. polymerase molecules
  4. a thymine dimer
College DNA, RNA, and Genetics
Mendel's law of independent assortment may not be true if the genes are                                                             .
  1. on different chromosomes
  2. on the same chromosome
  3. controlling different steps in the same biosynthetic pathway
  4. control different phenotypic characteristics
College DNA, RNA, and Genetics
DNA replication is a                    process.
  1. semiconservative
  2. nonconservative
  3. fully conservative
College DNA, RNA, and Genetics
There is at least ONE SPECIFIC tRNA MOLECULE FOR EACH               .
  1. 22 Amino acids
  2. 23 Amino acids
  3. 48 amino acids
  4. 20 Amino acids
College DNA, RNA, and Genetics
Phenotypes are frequently the result of interactions between                                   .
  1. single genes only
  2. the environment only
  3. multiple genes and the environment
  4. transposons
College DNA, RNA, and Genetics
Nucleosomes are composed of?
  1. DNA and RNA
  2. histones and RNA
  3. histones and DNA
  4. DNA and tubulin
  5. none of the above
College DNA, RNA, and Genetics
What happens at a start codon?
  1. translation of mRNA starts
  2. both transcription of a gene, and translation of mRNA starts
  3. transcription of a gene starts
College DNA, RNA, and Genetics
Which of the following refers to the sequence of genetic material that codes for a protein?
  1. mRNA
  2. tRNA
  3. exon
  4. intron
  5. repeat sequences
College DNA, RNA, and Genetics
Which of the three answer choices must genetic material be?
  1. able to store information that is used to control metabolic activities of cells or organisms
  2. able to undergo changes (mutations) providing the genetic variability required for evolution
  3. stable so it can be replicated accurately during cell division and be transmitted for generations
  4. strong and active enough to support living things through DNA replication and experience change
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