C. Most mutations are harmful or neutral to the organism in which they occur. C. Artificial induction is not possible. Mutations are the ultimate source of organic variations. 2. 1 Which two of the following statements about genetic variation are correct? Mutation rates are independent of gene size. b. Which of the statements given above are correct about mutation? may leave the amino acid sequence of a protein . A. Thalassemia is caused by mutations in the DNA of cells that make haemoglobin. A. Mutations are almost always random with respect to the needs of the organism. Related Posts. D. The origin of genetic variation is mutation. Acquired mutations are passed down from parent to offspring. answer-incorrect. Which of the following statements regarding mutation rates is correct? Answers. 2 Gamete production is the only possible source of genetic variation in sexual reproduction. A) Cancer can only occur with a mutation in a somatic cell. True T or F? Which of the following statements is true? A. Mutation rates for all genes of an organism are approximately the same. According to option C, Mutations inactivate the checkpoints of the cell cycle and cause loss of control over the cell cycle is the correct statement. Which of the following statements concerning cancer and mutations is CORRECT? 3 The environment can cause genetic variation. Consider the following statements with respect to genetic Mutation : 1. A. Mutations may be beneficiary, harmful, or neutral depending upon the function affected. What provide the new material on which evolution can act b.Genetic . False T or F? A) The goal of natural selection is speciation. A point mutation is a change in a single nucleotide in DNA. Which of the following statements regarding mutation rates is correct? Another false statement is that proto Anka genes our mutant versions of aqua genes that cause cancer and our last untrue statement is when tumor suppressor genes mutate, they become ankle jeans. Darwinian variations are small and directionless. It is a tumor suppressor that prevents cell division by inducing apoptosis. d. a and b are correct e. all of the above 3. A chromosomal mutation in which a segment is missing is called a deletion. Mutation rates are independent of exposure to external agents such as UV radiation. Following exposure to radiation, some of the chromatin strands are broken. Genetics can be defined as the scientific study of hereditary and its components ( genes, chromosomes, etc.) B. In addition to recombination, mutation is another phenomenon that leads to variation in DNA. Saltation refers to single step small mutation. Which of the following statements about mutation is true? Consider the following statements. Controlled by a single gene.Gene involved is HBA1Gene involved is present on chromosome number 11Occurs due to mutation Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions . C. Mutations increase variety in a population. Hence, Statement 1 is correct. Mutations increase variety and cause alleles to change. 2. True Point mutations that cause amino acid replacements are called: nonsynonymous (missense) mutation In the sickle-cell anemia mutation, the 5′-GAG-3′ codon for glutamic acid becomes the 5′-GUG-3′ codon for valine. However, such mutations are referred to as frameshift insertion or deletion mutations. The statement that can be considered wrong as regards mutation from the question is A. Mutations are always harmful. Affects males and females about equally b. D. A mutation can result in a change of function. Mutations can be either bad or good. (B) Mutations are generally lethal to populations. Variants can be selected by environmental factors. Hence, Statement 3 is correct. Which of the following statements regarding mutation is FALSE? D. Mutation rates are independent of gene size. A. Mutations can't result in a change in appearance. The statement which is correct regarding prokaryotic genetics is: B) Mutations in the DNA are a primary source of variation in prokaryote populations. It is involved in maintaining telomere length. B) Most chemicals that are carcinogens are also mutagens. Consider the following statements. Only mutations that occur in the gametes (sex cells) are passed on to the offspring. Which of the following statements about mutations is incorrect? If mutations inhibit the production of telomerase it will lead to the shortening of chromosomes during each replication cycle and results in cell death. c. a tri-nucleotide expansion within a gene. Correct, not all mutations are harmful. It is an alteration in the genetic material of a cell of a living organism or of a virus. The geological history of Earth has no relation with the biological history of Earth. Option B is incorrect as these mutations inhibit the telomerase inhibitor and thereby make the cells immortal. B) When reunited, two allopatric populations will interbreed freely if speciation has occurred. will be corrected. Which of the following statements is true about frame shift mutations: a. point single nucleotide deletion mutations are examples of typical frame shift mutations O b. has the least chance of being a lethal mutation C. a frame shift mutation leads to a change near the N-terminal end of a protein O d. Select all the correct answers. 1 Which two of the following statements about genetic variation are correct? we want to find a true statement with regards to cancer and jeans. may leave the amino acid sequence of a protein; Question: 1. E. B. Mutation rates are independent of exposure to external agents such as UV radiation. (E) Mutation rates are very high in most populations. a. Mutations are essential for evolution to occur b. mutation is a change in the sequences of bases in DNA or RNA c. most Mutations have no effect on the organisms in which they occur d. all of the above a. In asexual reproduction, the variations that occur due to sexual reproduction are absent but may occur due to mutations. a. Mutations are essential for evolution to occur b. mutation is a change in the sequences of bases in DNA or RNA c. most Mutations have no effect on the organisms in which they occur d. all of the above Mutations result either from errors in DNA replication or from the damaging effects of mutagens, such as chemicals and radiation, which react . (D) Mutations affect only certain gene loci in a population. Which of the following statements are correct concerning mutation? a. Maybe. C. Average mutation rates vary among taxonomic groups. A. Phenotype is not involved. View Available Hint(s) Some genetic diseases may be caused by the substitution of only one incorrect amino acid in a protein. A All cells from a single organism express the same genes. A mutation is any change in an organism's DNA. Which of the following statements concerning cystic fibrosis is NOT correct? IV. II. B. C. In mild thalassemia you may not need treatment.? 3 The environment can cause genetic variation. Bacteria can have mutations that allow them to survive in the presence of antibiotic drugs. III. Match the following terms and definitions. all of the following statements about ribosomes are correct except: a)all ribosomes have two subunits b) eukaryotic cells have 80s ribosomes and protein synthesis on theseribosomes can be inhibited by cycloheximidec) prokaryotic cells have 70s ribosomes and protein synthesis on these ribosomes can be inhibited by chloramphenicol d) mitochondria … C Mutations only occur in body cells and not in the gametes. (A) They do not attract stem sawfly (B) They are produced by mutat A mutation is a heritable change in the DNA sequence of an organism. a. these bacteria live on the nutrients from our bodies. UV and γ-rays are mutagens, i.e., the mutation causing agents. (C) Mutations serve as a source for genetic variation in a population. D 1 Asexual reproduction always produces genetic variation. e. Which of the following statements about mutations is TRUE? True T or F? No. C) Prokaryotes skip sexual life cycles because of their need . A. Mutation rates for all genes of an organism are approximately the same. Mutations are random and directional. Broken ends of the same chromatin can recombine to restore the original structure of the chromosome. A) a mutation that causes a cyclin gene to be expressed at all times during the cell cycle B) a mutation that causes an oncogene to be turned off so that no protein is made C) a mutation that causes a Cdk gene to be turned off so that no protein is made D) a mutation that causes a tumor suppressor gene to be over-expressed B. Mutations ensure alleles never change. they to keep our gut clean and healthy. B. Mutation rates are independent of exposure to external agents such as UV radiation. A. Missense mutations alter the coding sequence. 3. Therefore, B) statement also becomes correct. s. typhi is a bacteria that enter our bodies through contaminated food. The disease is always transmitted from the carrier mother to the child. A. Mutations always lead to genetic disease. There are many types of genetic mutations that occur, some of which only impact a single gene, while others affect an entire chromosome. 2 Gamete production is the only possible source of genetic variation in sexual reproduction. Average mutation rates vary among taxonomic groups. C. It codes for a cell-surface protein that interacts with growth factors and is thought to cause increased cell division. This leads to evolution and speciation. Categories Biology Post navigation. a. Which of the following statements is true? Mutations are random and directional. Which of the following statements about mutations is false? Occurs predominantly in populations of Northern European extraction c. Frequently diagnosed by measurement of sweat chloride d. Caused by a variety of mutations on chromosome 7 e. Genetic screening is usually unsuccessful answer choices. Evolution happens slowly over time. B. An affected male must have a father who has the . Hereditary mutations are caused by external factors, such as radiation. 3. Which of the following statements is false? B Mutations are not passed to offspring because they are lethal to the organisms. Read the following statements carefully- I. Hugo de Vries worked on evening primrose. Correct answers: 3 question: Question 2 (Multiple Choice Worth 4 points) (03.04 MC) Which of the following statements is correct regarding prokaryotic genetics? All mutations cause evolution. C. Mutations are alterations in normal DNA sequence. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. For examples, adaptations to certain environmental conditions that provide better chances of survival to the organisms are resulted from mutations, while may disorders, such as cancer are also called by mutations. A-It results in major antigenic changes B-It affects predominantly the matrix protein C-It is exhibited by only influenza A viruses D-It is due to frame shift mutations in viral genes E-It results in new sub types over time. A. Mutations are always bad. 31) Which of the following statements about speciation is correct? Darwinian variations are small and directionless. Sex cells only use half of the body's genetic code. Which of the following statements about mutation is true? Which of the following statements is true about frame shift mutations: a. point single nucleotide deletion mutations are examples of typical frame shift mutations O b. has the least chance of being a lethal mutation C. a frame shift mutation leads to a change near the N-terminal end of a protein O d. Mutations can occur spontaneously. Which of the following statements about mutations is false? A) A carcinogen is any chemical or physical agent that causes cancer. Which of the following statements is wrong with respect to beta Thalassemia? C) Usually, multiple mutations are required in different genes to cause cancer. Neutral mutations can have a significant effect on the organism. C. Average mutation rates vary among taxonomic groups. Yes, because any change to the DNA is passed on to the offspring. Which of the following statements regarding mutation rates is correct? The resulting organism, called a mutant, may have a recognizable change in phenotype compared to the wild type, which is the phenotype most commonly observed in nature.A change in the DNA sequence is conferred to mRNA through transcription, and may lead to an altered amino acid sequence in a protein on translation. It cannot be transmitted to the cell's or the virus's descendants. Hugo de Vries gave the Mutation Theory to explain the mechanism of evolution. A. Evolution means "survival of the fittest" (survivors are typically larger, more complex, or "better" in some sense). Cancer is caused by increased telomerase activity making the cancerous cells immortal and not by inhibition of telomerase production. C. A mutation is permanent. Which of the following statements are correct concerning mutation? D. II. Which of the following is not a means of conservation? d) The origin of genetic variation is mutation. a. Some mutations could even have a positive effect and help the creature adapt. D. Mutation rates are independent of gene size. Mutation rates for all genes of an organism are approximately the same. Broken ends are "sticky" and can join to other broken "sticky" ends. 7. d. Most mutations are harmful, so evolution proceeds more rapidly when no mutations occur. A So, the statement in option C is wrong. Mutations can result from exposure to high-energy electromagnetic radiation. b. point mutations of the Dystrophin gene. Which of the following statements is correct? 4.: It is now known that mutations can be caused by all of the following except: a) radiation : b) some chemicals : c) incest (i.e., mating with close relatives) D) Usually, a single mutation is all that is required to cause cancer. A. b) A mutation is any change in an organism's DNA. Let's write our false statements. a. Insertion or deletion of one or two bases changes the reading frame from the point of insertion or deletion. (A) Mutations are irreversible. - Mutations are the only mechanism available to evolve new genes - Most mutations help to improve the functioning of the mutated gene - Mutations at any one location in the DNA are rare - Virtually every individual has at least one mutation 6. Individuals with high "fitness" usually express dominant traits. answer-incorrect. b. A mutation is a genetic change that occurs in the genome of an organism, which is a permanent alteration. Individual organisms evolve as a result of mutations.C. Which of the following statements concerning cystic fibrosis is NOT correct? IV. ! Correct Answer: Option B Explanation. D. Mutations decrease variety in the population, lactobacillus is a bacteria that live inside humans. Which of the following statements about evolution is CORRECT? B) Mutations in the DNA are a primary source of variation in prokaryote populations. Which of the following statements is true about mutation? Only somatic mutations are important to evolution because they can be inherited Only (l) is correct (1) and (IV) are correct Only (II) and (III) are not correct O (), (il) and (IV) are . D. Mutations are always inherited 1 See answer Add answer + 10 pts Advertisement Occurs predominantly in populations of Northern European extraction c. Frequently diagnosed by measurement of sweat chloride d. Caused by a variety of mutations on chromosome 7 e. Genetic screening is usually unsuccessful This could occur throughout the entire population or in just a small group. Which one of the following statements about carcinogens is not correct? Any change to the DNA of an organism is called evolution. The correct option is D Mutations inhibit production of telomerase Cancer is a disease which causes abnormal cell growth with the potential to invade or spread to other parts of the body. Correct Answer - Option 3 : DNA is not altered under Mutation Mutation is a phenomenon which results in alteration of DNA sequences & consequently results in changes in the genotype & the phenotype of an organism. C) Natural selection chooses the reproductive barriers for populations. Which of This problem has been solved! B. Theoretically population size will grow exponentially if everybody reproduced maximally. a) Mutations are almost always random with respect to the needs of the organism. The type of thalassemia depends upon the number of mutations in genes. A) Crossing over during prophase I introduces a significant amount of genetic variation. A person with blood group B can only donate blood to individuals with blood groups. B. Genotype is not involved. Affects males and females about equally b. UV radiations can cause mutations in organisms - it is a mutagen. Correct answers: 3 question: Which is a correct statement about mutations? A mutation (Section 14.1) is a change in the nucleotide sequence of a short region of a genome (Figure 14.1A).Many mutations are point mutations that replace one nucleotide with another; others involve insertion or deletion of one or a few nucleotides. 1. C) Most mutagens are also carcinogens. C. Hugo de Vries based on his work on evening primrose brought forth the idea of mutations. Question options: mutations typically occur during the production or repair of DNA mutations involve changes in DNA sequence mutations in somatic cells of multicellular organisms are passed to offspring through sexual reproduction mutations may be due to mistakes in normal biological processes such as DNA replication mutations can . III. c) Most mutations are harmful or neutral to the organism in which they occur. B. One amino acid is substituted for another B. Missense mutations change a codon originally specifying an amino acid into a translation-termination codon C. Neutral mutations are changes in DNA sequence that Only (l) is correct (1) and (IV) are correct Only (II) and (III) are not correct O (), (il) and (IV) are . B. Mutations can be passed from parent to child. Which of the following is not true of mutations? Telomerase enzyme is responsible for replication of telomeres to help cells to maintain the chromosome length. within the body of an organism such as an animal, human, and plant. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Which of the following statements is true regarding mutations? this bacteria causes infections in the body. Mutations can be regarded as alterations in DNA sequences which usually brings about changes in the structure of a gene. D) Cancer usually originates from carcinogen-induced somatic-cell mutations. Question: Which one of the following statements about mutation types is correct? Check all that apply. A. . B A mutation: None of the other answer options is correct. Which of the following statements is correct regarding mutations? First, the gene product of a proto aqua gene inhibits the cell cycle. Advantageous variations are selected by environmental factors. When a mutation occurs in a population, something changes. a. Which of the following statements is correct regarding nectarless cotton varieties? 4 Mutations can produce genetic variation. Which of the following statements about mutations and genetic disease are correct? Which of the following statements concerning antigenic drift in influenza viruses is correct? based on this information, which two statements . A Many mutations are recessive, and it is unlikely that both parents will have the same recessive mutation. Read the following statements carefully- I. Hugo de Vries worked on evening primrose. B) Cancer can only occur with a mutation in a germ cell. 1. replication separation of DNA's two polynucleotide chains, which act as a template for a new chain 2. mutation when both genes are dominant and both are expressed in the phenotype 3. codominance when more than two alternatives for a gene exist 4. multiple alleles a copying mistake made during DNA replication 5. dihybrid cross the breeding of two . ; Some of the factors that brings about mutation are . e) All of these statements are correct. B. Spontaneous mutations occur as a result of exposure to a mutagen. A deletion or insertion of one or more nucleotides may result in a frameshift mutation. b. Mutations are always caused by chemicals or radiation.c. D. Saltation refers to single step small mutation. Mutations are the most fundamental way to add new genes to a gene pool. Mutations are discontinuous variations also called Saltatory Variation. ANSWER: C - Mutations increase variety in a population Hope this helps! | EduRev NEET Question is disucussed on EduRev Study Group by 722 NEET Students. Option C is incorrect as carcinogenic mutations inactivate the check points and cause loss of control over cell cycle. True Which of the following mutations is MOST likely to cause cancer? It might get the copy of a gene that wasn't mutated. A mutation: None of the other answer options is correct. Which of the following statements about Duchenne muscular dystrophy is correct? ; It can be a small DNA or large DNA alterations, it brings about raw material for natural selection. Point mutation is a process by which new alleles of a gene are produced b. Ultraviolet rays are a strongly ionizing radiation Which of the statements given is/are correct? 1 Asexual reproduction always produces genetic variation. Which of the following statements about mutations is correct? Consider the following statements. All mutations are harmful. 4 Mutations can produce genetic variation. Apr 29,2022 - Which of the following statement is correct about Thalassemia disease? will be corrected.

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