Homework Answers
Option A is the answer
Its false
Two mutations in the same gene will have different effects as it will bring upon different structural changes in the encoded enzyme resulting in changes in enzyme activity and it will be even more prominent when studied with biochemical details
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Question 14 One gene typically codes for one enzyme. The gene and enzyme relationship is a...
Drag each statement below to classify it as true or false to review the studies that...
Drag each statement below to classify it as true or false to
review the studies that revealed the specifics of gene function in
organisms.
Drag each statement below to classify it as true or false to review the studies that revealed the specifics of gene function in organisms. All Neurospora mutants unable to synthesize arginine contained the same mutation in a single gene. At least four genes control arginine Synthesis in Neurospora, and these acted on different enzymes in the...
Part A The one-gene one-enzyme hypothesis is no longer considered to be totally accurate. All of...
Part A
The one-gene one-enzyme hypothesis is no longer considered to be totally accurate. All of the following statements support this new understanding except one. Which one? Some enzymes are not coded by genes. Some genes do not code proteins. Some enzymes consist of different subunits each coded by it own gene. Overlapping genes and alternative splicing were discovered. Enzymes are a subclass of more general term - protein.
Answer Choices: A) Only one of the strains has a mutation in an eye color gene....
Answer Choices:
A) Only one of the strains has a mutation in an eye color
gene.
b) Strains C and D have mutations in different genes.
C) Strains C and D have mutations in the same gene.
D) More information is needed to infer the location of
mutations.
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A–G). In each strain, the white eye trait is due to...
In rabbits, one enzyme (the product of a functional gene A) is needed to produce a...
In rabbits, one enzyme (the product of a functional gene A) is needed to produce a substance required for hearing. Another enzyme (the product of a functional gene B) is needed to produce another substance required for hearing. The genes responsible for the two enzymes are not linked. Individuals homozygous for either one or both of the nonfunctional recessive alleles, a or b, are deaf. If two rabbits (both heterozygous for both genes are mated), what phenotypes and what phenotypic...
Please answer all.... Thank you! 81)If a polypeptide chain contains 600 amino acids, then the gene...
Please answer all.... Thank you!
81)If a polypeptide chain contains 600 amino acids, then the
gene coding for this polypeptide must contain _____.
600 nucleotides
1200 nucleotides
1800 nucleotides
1800 codons
1800 anticodons
More than one of the above are correct.
82) When we altered gene triplet in the DNA produces a chain-terminating codon in the mRNA, the (1pts) result is called a reverse mutation nonsense mutation missense mutation spontaneous mutation frameshift mutation 83) A single base substitution changes the...
Two types of mutations in the gene encoding phosphoribosylpyrophosphate synthetase, or PRS, have been observed. One...
Two types of mutations in the gene encoding phosphoribosylpyrophosphate synthetase, or PRS, have been observed. One mutation alters the regulatory site on the enzyme, whereas the other mutation alters the promoter of the enzyme. Both mutations result in increased PRS activity. How will the two different mutations in PRS affect the transition between the R and T states of the enzyme? The mutation in the regulatory site will not affect the transition between the R and T states. The mutation...
Which of the following statements regarding gene mutations is NOT true? Conditional mutations have different phenotypic...
Which of the following statements regarding gene mutations is NOT true? Conditional mutations have different phenotypic effects under different conditions and can be used to study the function of essential genes. Silent mutations cannot have any phenotypic effect on an organism. Frameshift mutations often result in a truncated protein product, similar to a nonsense mutation. Dominant mutations have a phenotypic effect despite the presence of one functional wild type allele.
An enzyme, encoded by gene A, converts substrate X into product Y. Individuals with a dominant...
An enzyme, encoded by gene A, converts substrate X into product Y. Individuals with a dominant mutation in gene A over accumulate substrate X, which causes severe neurological symptoms. At the molecular level, this enzyme functions as a homodimer. A homodimer is a protein composed of two subunits that are encoded by the same gene. Let’s suppose you are able to purify subunits from cell samples and then mix them together under conditions in which they form homodimers, and you...
66. _________________________________________________________ The complete functional name for the enzyme that is commonly called RNApoly is _____....
66. _________________________________________________________ The complete functional name for the enzyme that is commonly called RNApoly is _____. 67._________________________________________________________ The enzymes associated with telomere maintenance, are responsible for producing DNA from a RNA template and are associated with retroviruses are technically called ____. 68._________________________________________________________There is a term that is used to express the fact that if a RNA molecule forms a hairpin the two portions of the nucleic acid chains that make up hairpin have 3'-5' ends arranged in opposite directions. That...
QUESTION 49 A type of mutation that does not alter the amino acid sequence of a...
QUESTION 49 A type of mutation that does not alter the amino acid sequence of a polypeptide even though the nucleotide sequence has been changed. Induced mutation Nonsense mutation Silent mutation Missense mutation None of the above 2 points QUESTION 50 Which of the following is an example of DNA damage? Loss of the helix structure of the DNA. A single break in the backbone...
Drag each statement below to classify it as true or false to
review the studies that revealed the specifics of gene function in
organisms.
Drag each statement below to classify it as true or false to review the studies that revealed the specifics of gene function in organisms. All Neurospora mutants unable to synthesize arginine contained the same mutation in a single gene. At least four genes control arginine Synthesis in Neurospora, and these acted on different enzymes in the...
Part A
The one-gene one-enzyme hypothesis is no longer considered to be totally accurate. All of the following statements support this new understanding except one. Which one? Some enzymes are not coded by genes. Some genes do not code proteins. Some enzymes consist of different subunits each coded by it own gene. Overlapping genes and alternative splicing were discovered. Enzymes are a subclass of more general term - protein.
Answer Choices:
A) Only one of the strains has a mutation in an eye color
gene.
b) Strains C and D have mutations in different genes.
C) Strains C and D have mutations in the same gene.
D) More information is needed to infer the location of
mutations.
! Required information Fruit flies normally have red eyes. Seven different true-breeding strains of fly with white eyes have been identified (A–G). In each strain, the white eye trait is due to...
In rabbits, one enzyme (the product of a functional gene A) is needed to produce a substance required for hearing. Another enzyme (the product of a functional gene B) is needed to produce another substance required for hearing. The genes responsible for the two enzymes are not linked. Individuals homozygous for either one or both of the nonfunctional recessive alleles, a or b, are deaf. If two rabbits (both heterozygous for both genes are mated), what phenotypes and what phenotypic...
Please answer all.... Thank you!
81)If a polypeptide chain contains 600 amino acids, then the
gene coding for this polypeptide must contain _____.
600 nucleotides
1200 nucleotides
1800 nucleotides
1800 codons
1800 anticodons
More than one of the above are correct.
82) When we altered gene triplet in the DNA produces a chain-terminating codon in the mRNA, the (1pts) result is called a reverse mutation nonsense mutation missense mutation spontaneous mutation frameshift mutation 83) A single base substitution changes the...
Two types of mutations in the gene encoding phosphoribosylpyrophosphate synthetase, or PRS, have been observed. One mutation alters the regulatory site on the enzyme, whereas the other mutation alters the promoter of the enzyme. Both mutations result in increased PRS activity. How will the two different mutations in PRS affect the transition between the R and T states of the enzyme? The mutation in the regulatory site will not affect the transition between the R and T states. The mutation...
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