Biology Category 2 Quiz
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42 questions
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- Q1The technique known as chromosome painting is the result of scientific research. Scientists use chromosome painting to mark the locations of genes on human chromosomes with fluorescent tags. It is also possible to apply this technique to the chromosomes of many different species. Chromosome painting allows for which of the following?A comparison of the genomes of different speciesThe sequencing of proteins from many speciesAn increase in mutations in many speciesThe extraction of amino acids from different species60s
- Q2A section of a nucleic acid is shown in this diagram. The process represented in the diagram produces a molecule that is complementary to the template strand of DNA. What type of molecule is produced?PolypeptideMessenger RNANew DNACarbohydrate120s
- Q3If several pea plants with the genotype TTYy are crossed with pea plants with the genotype Ttyy, what percentage of the offspring will be expected to have the TTYy allele combination?25%40%75%50%120s
- Q4A model of a DNA molecule is shown here. The arrow indicates-the bond between adjacent phosphate and deoxyribose moleculesthe hydrogen bond between complementary nucleotidesthe junction of a codon and a DNA tripletthe junction of introns and exons in the sense strand of DNA120s
- Q5A codon chart is shown here Which of these changes to the DNA triple 3’GCT 5’ will affect the protein produced?TCTTCCGCAGTT120s
- Q6Crossing-over between nonsister chromatids during meiosis is significant in heredity. This process most likely leads to an increase in which of the following?The expression of dominant traitsThe occurrence of polyploidyGenetic variationNumber of gametes60s
- Q7Characteristics such as a widow’s peak or attached earlobes are determined by the genetic code. Which components of DNA are referred to as the genetic code?Nitrogenous basesDeoxyribose sugarsHydrogen bondsPhosphate groups60s
- Q8In cocker spaniels the allele for a black coat color (B) is dominant over the allele for a brown coat color (b). If a brown cocker spaniel is crossed with a heterozygous black cocker spaniel, which of the following genotypic ratios can be expected?1 BB: 2 Bb: 1 bb2 BB: 0 Bb: 2 bb0 BB: 2 Bb: 2bb2 BB: 1 Bb: 0 bb120s
- Q9How does DNA in cells determine an organism’s complex traits?DNA folds into the nucleus of each of the cells of an organism.DNA produces the energy an organism needs in order to grow.DNA separates into long single strands that make up each part of an organism.DNA contains codes for proteins, which are necessary for the growth and functioning of an organism.60s
- Q10The fact that a strain of yeast with a certain defective gene can use the human version of the gene to repair itself is evidence that yeast and humans-Share a genetic codeBoth have eukaryotic cellsDepend on the same food supplyHave identical genomes60s
- Q11A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?The offspring of the organismThe siblings of the organismThe other organisms living nearbyThe mating partner of the organism60s
- Q12Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzheimer’s disease have this type. Many cases of early-onset Alzheimer’s disease are inherited, a type known as familial Alzheimer’s disease (FAD). Which statement is best supported by this information?Deletion of one amino acid causes FAD.Natural selection will continue to reduce the incidence of FAD.FAD is the result of a genetic change in one or more chromosomes.FAD affects only the genes of middle-aged people.60s
- Q13Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?Binary fissionMitosisMeiosisFertilization60s
- Q14The sequence of nitrogenous bases in DNA varies widely. The sequence of the bases in DNA is most important for which of the following?Preventing mutations from occurring during DNA replicationAllowing the DNA to have the shape necessary for replicationProviding the instructions for the traits of an organismHelping form the sugar-phosphate backbone of DNA molecules60s
- Q15Four different types of cells are shown below. Which characteristic is shared by all four cells?Self-locomotionA mechanism for transforming sunlight into energyGenetic material composed of DNAMembrane-bound organelles that transport substances120s
