Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features? mutations are never detrimental and always advantageous, regardless of the environment mutations might be either advantageous or detrimental, depending on the environment mutations are always detrimental and never advantageous, regardless of the environment mutations are neither advantageous nor detrimental, regardless of the environment mutations are always both advantageous and detrimental, regardless of the environment

Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features? mutations are never detrimental and always advantageous, regardless of the environment mutations might be either advantageous or detrimental, depending on the environment mutations are always detrimental and never advantageous, regardless of the environment mutations are neither advantageous nor detrimental, regardless of the environment mutations are always both advantageous and detrimental, regardless of the environment

Name: Point mutations, like the single-nucleotide substitution in human sick
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Description: Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features?mutations are never detrimental and always advantageous, regardless of the environmentmutations might be eith

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter13: An Introduction To Genetic Technology

Section: Chapter Questions

Problem 3CS

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Which of the following has an impact on the rate at which mutations occur in cells? (Choose All That Apply) the magnitude of an environmental change the number of times DNA is replicated the size of the genome of an organism the frequency of cell division
What is a gene? Why are regulatory genes important to the evolutionary process? What is a mutation as defined in this course and readings. Are the end results of a mutation always "good" or always "bad"? Or is a mutation perhaps neither always good or always bad and could be "neutral or no effect" or "adaptive" in some situations? Does it depend on the gene, amino acid, protein, and case-by-case scenario? What genetic evidence suggests that humans are a part of a biological continuum with all life forms. Does the number of genes in a biological organism correlate, predict, or denote the complexity of the organism? Does the number of chromosomes in a biological organism correlate, predict, or denote the complexity of the organism?
In the replica plate experiment, it shows that mutations are random. However, certain environmental stresses (such as high temperature, high salt, and low pH) can increase the mutation rate. QUESTIONS: Does increasing the mutation rate increase the probability that an individual mutation will be adaptive?
Which of the following statements best describes the effect of mutations in DNA? A Mutations result in changes that can be positive, be negative, or have no consequences B Mutations result in changes that always have negative consequences C Mutations result in changes that cannot be detected unless it is revealed by genetic screening D Mutations result in changes that have no consequences
When the DNA sequence of the gene that codes for the peptide hormone insulin is compared in two mammals (e.g., humans and rats), most of the sequence differences are synonymous mutations. These far outnumber sequence differences that result in amino acid substitutions. Why might this be? A DNA sequence is more likely to mutate if the change does not alter the amino acid sequence. Most amino acid substitutions result in a beneficial phenotype that improves fitness and results in a greater number of offspring. Synonymous mutations occur in noncoding DNA sequences. mutations are random with respect to an organisms needs. Amino acid substitutions often result in proteins that have lost or compromised function and, therefore, are selected against. 00000
Background: In class we did a project about m and m’s and there ability to evolve and natural selection. (Yes I know they can’t actually evolve it was just used as a example in class) however I can’t figure out this question. Occasionally a mutant may occur and produce a candy that is misshapen or Pointier or flatter than the rest. Often this proves to be a weakness, but a rare mutation may confer extra M&M durability. Other mutations in M&Ms could occur ( like ones that result in a new color). A mutant un you population represents a new _________. What goes in the blank
Discuss the significance of mutations and explain the role of the environment in the evolutionary process. (Hint: Consider Lenski's study and what is demonstrated. Do not re-tell Lenski’s study)
Mutations in DNA may or may not result in a change in the phenotype of an organism. In which of the following situations will a mutation appear in the phenotype of an individual? The mutation occurs in an organism which is past reproductive age The genetic code for protein synthesis has not been altered in a gamete producing cell The mutation occurs in a body cell of the organism, resulting in cancer O The mutation results in a change in the amino acid sequence of the protein in a gamete producing cell
As discussed, the overall rate of mutations in humans is estimated to be about 1 × 10−8 mutations per base pair per generation. How many new mutations would you expect each person to carry, on average, based on this mutation rate? Other studies have estimated that each person carries about 100 new loss-of-function mutations. How does this number compare with your estimate of the number of mutations based on the mutation rate? What might account for any differences?
Which of the following statements about mutation is correct? -Changing one nucleotide is a mutation, but duplication of an entire gene is not. -A deletion mutation in a coding gene will always result in the change of the corresponding amino acid sequence. -Orthologous genes are genes from different species that have been selected in the same environment. -A mutation that changes amino acid sequence will always have a fitness effect. -None of the above
Which of the following statements accurately describes genetic mutations? * Mutations are a natural process that increases genetic diversity. Mutations are an unnatural process that always affect the phenotype. Mutations are an unnatural process that are always harmful. Mutations are a natural process that only effects genotype, not phenotype.
Evidence points to mutations more often being neutral than adaptive true or false