Homework Answers
Gene 1 is trascribed in the early stages and it works toward building RNA polymerasa, mutations in gene 1 makes the strain faulty at RNA polmerasa, this leads to late genes to express early, this late genes are realtade to toxicity and normaly would remain silent until further on in the infection
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Mutations in Phage T7's gene 1 identified it as a regulatory gene. What does the gene...
Transcriptional Regulation Gene activation/deactivation 1. what is histone acetylation? How does it affect gene expression? What...
Transcriptional Regulation Gene activation/deactivation 1. what is histone acetylation? How does it affect gene expression? What else can happen to nucleosomes that affects gene expression? Do all the nucleosomes fall off the chromosome at once? 2. what is DNA methylation? How does it affect gene expression? Be able to discuss the examples of DNA methylation covered in class (X inactivation, imprinting). 3. Epigenetics. What is this, and how does it affect gene expression?
1 What is an imprinted gene? Select one: a. A gene that is found on a...
1 What is an imprinted gene? Select one: a. A gene that is found on a Barr body b. A gene that is silenced upon inheritance from a designated parent c. A gene that is inherited from only one parent d. A gene that is encoded on only one of the two copies of a chromosome Question 2 Which of the following is NOT a typical characteristic of cancer? Select one: a. Malignant cancers are typically not able to metastasize...
1. Explain how some patients who are homozygous for the sickle-cell allele do not develop sickle-cell...
1. Explain how some patients who are homozygous for the sickle-cell allele do not develop sickle-cell crisis or other symptoms of the disease. Because of a mutation to a regulatory gene, a variant form of the beta subunit is expressed that does not cause sickling of hemoglobin protein. Because of a defective regulatory gene, fetal hemoglobin is expressed in adulthood which compensates for defective adult hemoglobin. Because of an additional mutation to the gene for the beta subunit of hemoglobin,...
Question 1: As a researcher, you want to prevent gene expression by cleaving the product of...
Question 1: As a researcher, you want to prevent gene expression by cleaving the product of transcription. Which regulatory mechanism would you use? a, miRNA b. siRNA c. miRNA or siRNA d. proteasome e. RNA splicing ------------------------------------------------------------------------------------------------------------------- Question 1a: Which statement represents a difference between DNA replication in your cells and amplification through PCR? a. All of the above represents differences b. DNA primers are required for PCR, but not in your cells c. PCR involves differential temperature, but your...
Genetics Worksheet Week 3: Gene Regulation and Epigenetics 1. Duchenne muscular dystrophy is caused by a mutation in a gene that is 2.5 million nucleotides in length and encodes a protein called dyst...
Genetics Worksheet Week 3: Gene Regulation and Epigenetics 1. Duchenne muscular dystrophy is caused by a mutation in a gene that is 2.5 million nucleotides in length and encodes a protein called dystrophin. The dystrophin protein itself is 3684 amino acids in length. Calculate below the approximate size of the mRNA that encodes dystrophin. Approximately what percentage of the gene that encodes dystrophin is intron sequence? The human genome encodes a much greater variety and number of proteins than the...
1. Check all genes you would expect to be significantly expressed in eye cells. A.the RPSA...
1. Check all genes you would expect to be significantly expressed in eye cells. A.the RPSA gene B. the OPN1SW gene C. the OCT-4 gene D. the INS gene 2. Check all genes you would expect to be significantly expressed in stem cells. A.the RPSA gene B. the OPN1SW gene C. the OCT-4 gene D. the INS gene 3. Check all genes you would expect to be significantly expressed in pancreatic cells. A.the RPSA gene B. the OPN1SW gene C....
Question 1 01. is The product of the lac Z gene is an enzyme. What does...
Question 1 01. is The product of the lac Z gene is an enzyme. What does this enzyme do in the bacterial cell? splitting the β-linkage of lactose forming lactose from two glucose molecules forming ATP from pyruvate replacing hexokinase in the early steps of glycolysis nonautonomous replication
can help me writing a summary please Chromosomal Aberrations and Human Disorders In addition to mutations...
can help me writing a summary please Chromosomal Aberrations and Human Disorders In addition to mutations that alter the information content of a single gene, chromosomes may be subjected to more extensive alterations that occur most commonly during cell division. Pieces of a chromosome may be lost or segments may be exchanged between different chromosomes. Because these chromosomal aberrations follow chromosomal breakage, their incidence is increased by exposure to agents that damage DNA, such as viral infection, X‐rays, or reactive...
5. Consider the wild-type F8 gene. What would happen to the 1) transcript (mRNA) sequence and...
5. Consider the wild-type F8 gene. What would happen to the 1)
transcript
(mRNA) sequence and quantity, 2) to the protein (sequence,
quantity, function) and 3) the person’s
overall phenotype if they were homozygous (both copies of the
gene are the same) for a 3 base-pair
deletion in the:
i. First intron
ii. First exon
iii. The promoter
iv. 5’UTR
v. Last exon
6. What environmental factor could affect the phenotype caused
by an F8 null mutation?
Thrombophilia is a...
1. Damaged DNA is discovered during the G1 checkpoint. How does p53 react, and what are...
1. Damaged DNA is discovered during the G1 checkpoint. How does p53 react, and what are the possible results? 2. If S phase checkpoints detect nucleotides deficit, what happens to the dividing cell and the cell cycle? 3. What three conditions may be detected during the G2 checkpoints, and what are the two possible results if there is inadequate DNA or spindle fibers? 4. What two conditions are checked during the metaphase checkpoint? What happens if the cell “passes” the...
Genetics Worksheet Week 3: Gene Regulation and Epigenetics 1. Duchenne muscular dystrophy is caused by a mutation in a gene that is 2.5 million nucleotides in length and encodes a protein called dystrophin. The dystrophin protein itself is 3684 amino acids in length. Calculate below the approximate size of the mRNA that encodes dystrophin. Approximately what percentage of the gene that encodes dystrophin is intron sequence? The human genome encodes a much greater variety and number of proteins than the...
Question 1 01. is The product of the lac Z gene is an enzyme. What does this enzyme do in the bacterial cell? splitting the β-linkage of lactose forming lactose from two glucose molecules forming ATP from pyruvate replacing hexokinase in the early steps of glycolysis nonautonomous replication
5. Consider the wild-type F8 gene. What would happen to the 1)
transcript
(mRNA) sequence and quantity, 2) to the protein (sequence,
quantity, function) and 3) the person’s
overall phenotype if they were homozygous (both copies of the
gene are the same) for a 3 base-pair
deletion in the:
i. First intron
ii. First exon
iii. The promoter
iv. 5’UTR
v. Last exon
6. What environmental factor could affect the phenotype caused
by an F8 null mutation?
Thrombophilia is a...
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