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Clickers 1 What is the genetic material of prokaryotes Unit 3 Practice Test 2 How many centromeres are there per chromosome a Circular DNA b RNA c tRNA d mRNA a 1 b 2 c 3 d 4 a 1 b 2 c 3 d 4 a Prophase b Prometaphase c Metaphase d Anaphase e Telophase f It does not happen a Prophase 1 b Prophase 2 c Anaphase 1 d Anaphase 2 3 How many centromeres per chromosome consisting of 2 sister chromatids 4 In mitosis when do homologous chromosome pairs separate 5 In meiosis when do homologous chromosomes separate 6 At G2 the amount of DNA is X At Telophase 2 the amount of DNA in each daughter cells is what 7 At G1 the amount of DNA is X At Telophase 2 the amount of DNA in each daughter cell is what 8 At G2 there are 40 chromatids What is the diploid 2n chromosome a 2X b X c d 5X 25X a 2X b X c d 5X 25X number a 80 b 40 c 20 d 10 9 DNA is replicated a G1 b S c G2 d Prophase 1 e Prophase 2 f Telophase 1 g Telophase 2 many chromosomes 10 At G2 there are 40 chromatids At Telophase 2 each daughter cell has how a 80 b 40 c 20 d 10 a 80 b 40 c 20 d 10 a One b Two c Three d Four a True b False 11 At G2 there are 40 centromeres At Telophase 2 each daughter cell has how many chromosomes 12 What is the alternative form of a gene a Allele b Centromere c Chromosome d Sister chromatid 13 How many different alleles can a diploid individual have at a single gene locus if there are 4 alleles in the population 14 Recessive alleles are not expressed because they code for an inactive or defective enzyme True or false 15 When do homologous chromosomes separate a Prophase 1 b Prophase 2 c Anaphase 1 d Anaphase 2 e They never separate in meiosis 16 When does Mendelian segregation occur a Prophase 1 b Prophase 2 c Anaphase 1 d Anaphase 2 e Metaphase 1 f Metaphase 2 17 Homozygote a AA b Aa c aa d a and b e a and c 18 Genotype a Purple flowers b PP or Pp 19 The determines the a Phenotype genotype b Genotype phenotype a 0 b 25 c 50 d 75 e 100 a Dominant b Recessive c Homozygous d Heterozygous e Unknown a Yes b No a Yes b No a Yes b No 20 In across between heterozygous purple flowered peas what percent of the offspring will be homozygous 21 In a test cross what is the phenotype of the unknown individual 22 Can a man of blood type A be excluded as the father of a type O child 23 Can a man of blood type AB be excluded as the father of a type O child 24 Can a man of blood type O be excluded as the father of a type AB child 25 Why is the sickle allele maintained in populations particularly in Africa and the Mediterranean Sea area a There is a high mutation rate in those areas b Heterozygotes are immune to malaria 26 What is the mode of inheritance a Autosomal Dominant b Autosomal Recessive c X linked recessive 27 For an autosomal recessive trait if two affected individuals have children all of their children will have the trait true or false 28 In mitosis it does not matter if you have unpaired chromosomes true or 29 How many Barr bodies are there in the nucleus of a Turner s female cell 30 Turner s female XO 45 a Eudeploidy b Aneuploidy 31 What do males inherit from their mothers a X chromosome b A good personality c Mitochondria d A and b e A and c f B and c g A b and c 32 How many Barr bodies in the preceding Klinefelter male cells XXXXY a True b False false a True b False a 0 b 1 c 2 d 3 e 4 f 5 a 0 b 1 c 2 d 3 e 4 f 5 a 1 b 2 c 3 d 0 33 A Klinefelter male XXX 47 is an example of what a Euploidy b Aneuploidy 34 An XXX female has how many Barr bodies 35 DNA replication is a Conservative b Semi conservative c Dispersive 36 Human DNA does not incorporate AZT Why a Human DNA lacks thymidine b Human DNA polymerase has a proof reading ability c Human DNA does not grow 5 to 3 37 The double helix is antiparallel This refers to the directionality of the two 38 What stabilizes the base pairing between strands strands True or false a True b False Ionic bonds a Covalent bonds b c Hydrophobic interactions d Hydrogen bonds 39 A pairs with what base 40 DNA polymerase works 5 to 3 a Adds nucleotides to the 3 phosphate b Adds to the 3 hydroxyl c Adds to the 5 hydroxyl d Adds to the 5 hydroxyl 41 A codon of 2 bases could code for how many amino acids a A b G c T d C a 1 b 2 c 4 d 8 e 16 f 24 42 The anticodon base pairs to the mRNA a Parallel b Anti parallel 43 New monomers are added to the free 5 phosphate in the growing DNA chain 44 Both the leading and lagging strands are synthesized 5 to 3 True or false True or false a True b False a True b False 45 The central dogma has no exceptions a True b False c What s the central dogma 46 Stitches together Okazaki fragments a Primase b DNA polymerase 47 The enzyme that inserts the RNA primer in DNA synthesis c Ligase d Helicase e Stichase a Ligase b Primase c RNase d RNA synthase a 5 TACG3 b 3 TACG5 c 5 UACG3 d 3 UACG5 48 DNA template 5 ATGC3 RNA made 49 The anticodon base pairs to the mRNA a Parallel b Anti parallel 50 The central dogma a DNA is translated into mRNA which is transcribed into proteins b DNA is transcribed into mRNA which is translated into proteins c Study DNA to win the Nobel Prize 51 Transfers the genetic message from the nucleus to the cytoplasm a Transfer RNA b Messenger RNA c Ribosomal RNA 52 In contrast to DNA RNA has a a 2 OH group b 3 OH group c 5 phosphate group d 3 phosphate group 53 RNA base not found in DNA a Thymidine b Uracil c Adenine d Cytosine e Guanine 54 Features of tRNA a Anti codon b Amino acid binding site c At least one tRNA for each amino acid d Transfers message into the cytoplasm e A and b f A b and c g A b c and d a ALA tRNA b GLY tRNA 55 Which is the first tRNA to come onto the ribosome for polypeptide synthesis 56 …


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LSU BIOL 1201 - Unit 3 Practice Test

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