What enzyme breaks weak hydrogen bondsRna can be transcribed by any strand of the dsdnaWhere does RNA go when it leaves the nucleus?Rna chain contains promoter sequenceName the 3 parts of a nucleotide (2/3)Rna chain contains terminator sequencewhat are chromosomes made up of (2/2)What is the master copy of an organisms genetic info?What special protein contains the chemical reactions needed for life?What part of the rna comes out first?Which of the following is most likely to result if a cell is unable to produce histone proteins?a. topoisomerases in the 300-nm fiber scaffolding would not need to be as activeb. the 30-nm fiber pack more tightly and become thinner than 30 nmc. there would be an increase in the amount of DNA produced during replicationd. the cell's DNA could not be packed into its nucleusRadioactive thymine is added to media containing one actively dividing E. coli bacterium. Which of the following outcomes would be seen after a single cell division?a. DNA in both daughter cells would be radioactive.b. One of the daughter cells, but not the other, would have radioactive DNA.c. Neither of the two daughter cells would be radioactive.d. All four bases of the DNA would be radioactive.What fraction of the offspring from a cross between two animals with the genotype AaBbCc are expected to be homozygous recessive for the three traits?a. 1/64b. 1/4c. 1/8d. 1/16When Mendel set up a Parental (P) cross between true breeding purple and white flowered plants to generate the F1 and then allowed the F1 to self-pollinate to generate the F2 he saw a dominant to recessive ratio of 3:1. What phenotypic ratio would be expected if he crossed the F1 with the original purple parent?a. 9:3:3:1b. 4:0c. 3:1d. 1:1What are the repetitive DNA sequences present at the ends of eukaryotic chromosomes called?a. sarcomeresb. chromomeresc. centromeresd. telomerese. polypeptidesWhen a dominant allele coexists with a recessive allele in a heterozygote individual, how do they interact with each other?a. They do not interact at all.b. The dominant allele prevents transcription of the recessive allele.c. The dominant allele prevents expression of the recessive allele by an unknown mechanism.In human blood types, Rh positive is a trait that shows simple dominance over Rh negative. The Rh phenotype is recorded by stating "positive" or "negative" after the individuals ABO blood type. A woman who has blood type A positive has a daughter who is type O positive and a son who is type B negative. Which of the following phenotypes is possible for the father?a. A negativeb. AB negativec. O negatived. B positiveA diploid animal is dihybrid at the Head shape (H) and Tail length (T) loci. Which of the following gamete genotypes can it produce?a. HhTtb. HHTTc. Htd. HhWhich of the following statements correctly describes the structure of chromatin?a. Both heterochromatin and euchromatin are found in the cytoplasm.b. Heterochromatin is composed of DNA, whereas euchromatin is made of DNA and RNA.c. Heterochromatin is highly condensed, whereas euchromatin is less compact.d. Euchromatin is not transcribed, whereas heterochromatin is transcribed.The lagging strand is characterized by a series of short segments of DNA (Okazaki fragments) that are joined together to form a finished lagging strand. The experiments that led to the discovery of Okazaki fragments gave evidence for which of the following ideas?a. DNA polymerase synthesizes leading and lagging strands during replication only in one direction.b. DNA is a polymer consisting of four monomers: adenine, thymine, guanine, and cytosine.c. DNA is the genetic material that requires removal of short RNA segments to be functional.d. Bacterial replication is fundamentally different from eukaryotic replication.
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