Griffith's experiments with S. pneumoniae were significant because they showed that traits could be transferred from one organism to another. What else did he find that was significant?a. protein could not be the genetic materialb. the transferred traits were heritablec. heat kills bacteriad. DNA was the genetic materiale. a virus made the bacteria pathogenicWhich of the following statements correctly explains the observation that parents with two different phenotypes produced offspring with a phenotype that is a blend of the two parental varieties?a. Both of the parents are homozygous at that locusb. Neither of the parental alleles is expressed in the offspringc. Neither of the parental alleles is dominant over the other.d. Both of the parents have dominant alleles.Which of the following structural characteristics is most critical for the association between histones and DNA?a. Histones are positively charged.b. There are at least five different histone proteins in every eukaryote. c. Histones are small proteins.d. Histones are highly conserved (that is, histones are very similar in every eukaryote).Hershey and Chase set out to determine which type of molecule is used for genetic inheritance. They completed a series of experiments where E. coli was infected by a T2 virus. Which molecular component of the T2 virus ended up inside the cell?a. ribosomeb. proteinc. DNA d. RNAWhich of the following characteristics of DNA allows it to carry a vast amount of hereditary information?a. sequence of basesb. phosphate-sugar backbonesc. complementary pairing of basesd. antiparallel orientationFeather color in budgies is determined by two different genes, Y for pigment on the outside of the feather, and B for pigment on the inside of the feather. YYBB, YyBB, or YYBb is green; yyBB or yyBb is blue; YYbb or Yybb is yellow; and yybb is white. Two blue budgies were crossed. Over the years, they produced 22 offspring, five of which were white. What are the most likely genotypes for the two blue budgies?a. yyBB and yyBbb. yyBb and yybbc. yyBb and yyBbd. yyBB and yyBBWhich of the following statements about the law of independent assortment is correct?a. It is the consequence of having two copies of each chromosome in somatic cells and one copy in gametes.b. It is the reason that dominant alleles are visible in the organism's phenotype.c. It describes the inheritance of different genes relative to one another.d. It describes the inheritance of different alleles relative to one another.Which of the following lists represents the order of increasingly higher levels of organization of chromatin?a. nucleosome, 30-nm chromatin fiber, looped domainb. 30-nm chromatin fiber, nucleosome, looped domainc. nucleosome, looped domain, 30-nm chromatin fiberd. looped domain, 30-nm chromatin fiber, nucleosomeWhich of the following best describes how an individual with genotype AaBbCCDdEE can make gametes with eight different genotypes?a. crossing over during prophase I leads to increased genetic diversityb. the inheritance of a particular copy of one chromosome does not affect the inheritance of a different chromosomec. dominant alleles tend to be inherited togetherd. mutations during meiosis form new alleles that are incorporated into the gametesConsider pea plants with the genotypes GgTt and ggtt. How many types of gametes can be produced by each of these two plants?a. one, twob. two, onec. one, oned. four, twoe. four, oneWhat is the process called when DNA is used to make RNAWhat type of bond is found between the bases of DNA?What about the structure of Adenine and Guanine make it impossible to bond with each other?What type o mutation invples one or a few nucleotidesWhat is the complementary strand of TGCAC?What are the nitrogenous base pairs?During what phase of the cell cycle does DNA replication take place?What type of bond is found between the backbones of DNA?what is the recombinant frequency for genes on different (non homologous) pairs of chromosomes; i.e. recombinants in the population of gametes you produce by independent assortmentwhat will be the percent of recombinant vs parental gamers if crossing over does take place between gene A and gene B
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