Molecular Basis of Inheritance Questions

Biology

Molecular Basis of Inheritance

A Moving to the next question prevents changes to this answer. Question 1 A dominant allele only shows up in the physical when it is homozygous. True False Moving to the next question prevents changes to this answer. stv 24 JP C

Biology

Molecular Basis of Inheritance

Name: Date: Per Label the parts of the DNA strand: C G G C C OG TA G A DNA is a in the shape of a helix The backbone of DNA is called a backbone. DNA carries and expresses information. Chargaff's rule states that and Calculate Chargaff's Rule for each problem given: A DNA sample from a cat contained 37% Scientists use DNA to identify different Adenine and Thymine (A-T), how much animals, in a population of fish the sampled Guanine and Cytosine (G-C) is in the sample? DNA showed 74% Guanine and Cytosine (G- Show your work, circle your final answer. C), how much Adenine and Thymine (A-T) are in the sampled population? Show work, circle final answer.

Biology

Molecular Basis of Inheritance

15. All of the following are considered post- transcriptional modifications that occur in the nucleus EXCEPT (A) 5' capping with methylated guanines. (B) the addition of a 3' poly-adenine tail. (C) the excision of introns from mRNA via spliceosome formation. (D) mRNA attachment to polyribosomes. (E) stabilization of mRNA by snRNPs.

Biology

Molecular Basis of Inheritance

blo111spoc.umb.edu english speech - Google. © Comp. 101: Section 89 S... Mail - Naomi Osaze-0. https://phitarchive.org/ar... Recombinant DNA I: Cor Course > 26: Recombinant DNA II > Lecture: Analyzing a Gene (REQUIRED) (EL) > Recombinant DNA III: Core Question 1 < Previous Recombinant DNA III: Core Question 1 Bookmark this page Recombinant DNA III: Core Question 1 0/1 point (graded) Based on the lecture, which of the following are true of the Polymerase Chain Reaction (PCR)? Check all that apply. It uses an RNA primer It requires a special DNA polymerase that works at very low temperatures, It makes many copies of a target DNA sequence It can start with as little as one DNA molecule It involves DNA replication in a living cell x esc LO 888 2 ^ 2 # 3 % 5 4 6 & 7 8 9 0 @ w tab E R T Y C U O P. S D slock F G H JI K .... N X V B N M V - ^. * contra option corond MOSIS command

Biology

Molecular Basis of Inheritance

You would like to amplify the following genomic DNA segment using some combination of the four primers (P, Q, R, and S) that you have in your possession. The primers are already aligned in the same positions as the template sequence for ease of reading. ...5'-TAGGAGACCTACATCAGGCCTT... TTTTATCAAGAAAGCAGATTTG-3'... ..3'-ATCCTCTGGATGTAGTCCGGAA...AAAATAGTTCTTTCGTCTAAAC-5'... P: 5'-GACCTACATCAG-3' R: 3'-CTGGATGTAGTC-5' Q: 5'-TCAAGAAAGCAG-3' S: 3'-AGTTCTTTCGTC-5' Which primer pair should you use in the PCR amplification? OPS ORS O PQ ORQ

Biology

Molecular Basis of Inheritance

1. What is the benefit of DNA having a helical structure? 2. Why is it necessary to use histone proteins to package DNA? 3. Why do humans have 23 pairs of chromosomes rather than more or less than that number? 4. What are some issues/problems that may occur during the process of transcription and/or translation?

Biology

Molecular Basis of Inheritance

Question 8 (1 point) A bacterium can make the amino acid glycine or absorb it from its surroundings. A biochemist found that glycine binds to a repressor protein and causes the repressor to bind to the bacterial chromosome, turning off an operon. If it is like other operons, the presence of glycine will result in the The breakdown of glycine Inhibition of bacterial cell division Cessation of the synthesis of glycine Manufacture of the repressor protein

Biology

Molecular Basis of Inheritance

Question 16 (1 point) If lactose is present in the environment of an E. coli cell: The lactose will trigger increased replication of the gene for B-galactosidase The lactose will bind to the repressor protein causing it to change shape and be released from the operator region The lac operon will hydrolyse the lactose into B-glucose and B-galactose The lactose will bind to the repressor protein causing it to change shape so that it can bind to the regulator gene in the operon

Biology

Molecular Basis of Inheritance

Eukaryotic cells use multiple methods to regulate the amount of each protein in the cell. For each of the following scenarios, choose whether it would be better for the cell to regulate expression at the level of transcription, translation, or post-translation and explain why you made that choice. A) a metabolic enzyme that is only necessary when certain nutrients are present B) an enzyme involved in initiation of apoptosis that helps with cutting chromosomes into small pieces 7 A B I III *

Biology

Molecular Basis of Inheritance

Given the following template strand of DNA, answer the following questions: GP C2 A3 T4 A5 C G7 T8 A9 G10 CIGA GTCCCGAA CTC (Note: the numbers over the letters are just to help you identify where future mutations will be located, they do not affect the sequence) (a) Write the coding (complementary) DNA strand (b) Write the mRNA that would be transcribed from the template strand (the one provided in the question). (c) Using the genetic code table, write the amino acids (in sequence) that would actually form the polypeptide chain based on your mRNA. [Just use the 3 letter abbreviations found in the table.] For questions d-g what effect would the mutation have on the amino acid sequence and what effect would you expect the mutation to have on protein formation and function and why. Start with the original DNA sequence for each question (i.e. do not carry the mutations through to the next question) (d) If the last nucleotide of the DNA strand was mutated from a C to a T what effect would you expect it to have on protein formation and why? (e) If the 9th nucleotide of the DNA strand was mutated from an A to a G what effect would you expect it to have on protein formation and why? (f) If an AG were inserted between the 7th and 8th nucleotides (becoming GAGT) what effect would you expect it to have on protein formation and why? (g) If the 6th nucleotide of the DNA strand was mutated from a C to a G what effect would you expect it to have on protein formation and why?

Biology

Molecular Basis of Inheritance

When linear DNA travels on an agarose gel, we can estimate its size using the linear standard DNAs in the ladder. However, when we ran the plasmid on an agarose, the 2.7-kb pUC19 plasmid showed up at bewteen 1.5kb and 2kb. What is the reason for this discrepancy? 1.5kb 0.5kb DNA ladder 1. Plasmid DNA forms complex with host genomic DNA, which travels faster than linear DNA 2. Plasmid DNA usually forms a complex with proteins, thus runs at a different velocity. 3. Plasmids are circular DNA, which can form a 3-dimensional conformation that runs differently from linear DNA 4. The plasmid DNA runs from cathode to anode when it travels on an electric field

Biology

Molecular Basis of Inheritance

QUESTION 23 Select the true statement about splicing: O A. splice sites are selected by the snRNPs once recruited by SR proteins O B. Group I and II introns are removed by the spliceosome O C. introns are spliced after a lariat forms O D. the branch point "A" is found in the exon O E. splicing is unique to prokaryotes a