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Chemistry LibreTexts

3.1 Unit 3 Exam

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    184346
  • cc_profilecc.exam.v0p1qmd_assessmenttypeExaminationqmd_scoretypePercentagecc_maxattempts1
    cc_profilecc.true_false.v0p1Offspring formed by <u>asexual</u> reproduction look exactly like their parent. TrueFalse1100cc_profilecc.true_false.v0p1In <u>budding</u>, new individuals develop from pieces of the original individual. TrueFalse4100cc_profilecc.true_false.v0p1While paired together during the <u>second</u> division of meiosis, two chromosomes may exchange segments of DNA. TrueFalse6100cc_profilecc.true_false.v0p1<u>Heterozygous</u> individuals have two of the same alleles for a particular gene. TrueFalse8100cc_profilecc.true_false.v0p1The inheritance of sex-linked traits can be studied by making a <u>pedigree</u> of several generations of a family. TrueFalse9100cc_profilecc.true_false.v0p1The phenotype that results from an inherited pair of alleles depends on the instructions in the genes <u>only</u>. TrueFalse12100cc_profilecc.true_false.v0p1Garden peas are <u>difficult</u> to grow because they mature <u>slowly</u>. TrueFalse14100cc_profilecc.true_false.v0p1A <u>dominant</u> allele masks the effect of a recessive allele. TrueFalse15100cc_profilecc.true_false.v0p1<u>Heterozygous</u> individuals have two of the same alleles for a particular gene. TrueFalse18100cc_profilecc.true_false.v0p1It has been discovered that the genetic material is <u>protein</u>. TrueFalse20100cc_profilecc.multiple_choice.v0p1Normal human males develop from fertilized eggs containing which of the following sex chromosome combinations?XYXXXOOO21100cc_profilecc.multiple_choice.v0p1How many chromosomes are in the body cells of an organism that has a haploid number of 8?48121628100cc_profilecc.multiple_choice.v0p1diploid : somatic cell :: haploid :body cellchromosomegametezygote31100cc_profilecc.multiple_choice.v0p1A haploid cell is one thathas two homologues of each chromosome.is designated by the symbol 2<i>n</i>.has chromosomes found in pairs.has one set of chromosomes.36100cc_profilecc.multiple_choice.v0p1Crossing-over occursduring prophase II.during fertilization.during prophase I.at the centromere.39100cc_profilecc.multiple_choice.v0p1The “father” of genetics wasA. Knight.Hans Krebs.Gregor Mendel.Charles Darwin.43100cc_profilecc.multiple_choice.v0p1In rabbits, black fur (<i>B</i>) is dominant to brown fur (<i>b</i>). Consider the following cross between two rabbits.<br><br><img width="186" height="207" align="bottom" alt="nar003-1.jpg" src="$IMS-CC-FILEBASE$../resources/nar003-1_573cd19f440c6.jpg" border="0"><br><br> Refer to the illustration above. The genotypic ratio of the F1 generation would be1:1.3:1.1:3.1:2:1.48100cc_profilecc.multiple_choice.v0p1The phenotype of an organismis used to represent its genetic composition.is the physical appearance of a trait.occurs only in dominant individuals.cannot be seen.50100cc_profilecc.multiple_choice.v0p1If a characteristic is sex-linked, the gene for it is found ona sex chromosome.an autosome.a linked chromosome.an allele.53100cc_profilecc.multiple_choice.v0p1<img width="293" height="183" align="bottom" alt="nar004-1.jpg" src="$IMS-CC-FILEBASE$../resources/nar004-1_573cd19f60459.jpg" border="0"><br><br> The entire molecule shown in the diagram above is called a(n)amino acid.nucleotide.polysaccharide.pyrimidine.58100cc_profilecc.multiple_choice.v0p1The enzymes that unwind DNA during replication are calleddouble helixes.DNA helicases.forks.phages.62100cc_profilecc.multiple_choice.v0p1During transcription, the genetic information for making a protein is “rewritten” as a molecule ofmessenger RNA.ribosomal RNA.transfer RNA.translation RNA.65100cc_profilecc.multiple_choice.v0p1Transcription begins when RNA polymeraseattaches to a ribosome.unwinds a strand of DNA.binds to a strand of RNA.attaches to the promoter sequence of a gene.72100cc_profilecc.multiple_choice.v0p1In bacteria, a group of genes that code for functionally related enzymes, their promoter site, and the operator that controls them all function together as a(n)exon.intron.operon.ribosome.75100cc_profilecc.fib.v0p1The patterns that Mendel discovered form the basis of _, the branch of biology that deals with heredity.genetics100cc_profilecc.fib.v0p1If some of the offspring of a test cross have the recessive trait, then the genotype of the individual being tested is _.heterozygous100cc_profilecc.fib.v0p1Transcription and translation are stages in the process of _.gene expression100cc_profilecc.fib.v0p1During translation, amino acids are brought to the ribosomes by molecules of _.transfer RNA100cc_profilecc.essay.v0p1qmd_computerscoredNo<img width="360" height="269" align="bottom" alt="nar001-1.jpg" src="$IMS-CC-FILEBASE$../resources/nar001-1_573cd19fd9144.jpg" border="0"><br><br> Refer to the illustration above. Is the trait indicated in the pedigree is sex-linked? Explain.100cc_profilecc.essay.v0p1qmd_computerscoredNoWhat characteristic of garden-pea flowers makes it easy to control their mating?100cc_profilecc.essay.v0p1qmd_computerscoredNoExplain how an individual’s genotype and phenotype are related.100cc_profilecc.essay.v0p1qmd_computerscoredNoThe DNA molecule is described as a double helix. Describe the meaning of this expression and the general structure of a DNA molecule.100