Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 20, Problem 8RQ
Which statement about analogies is correct?
- They occur only as errors
- They are synonymous with homologous traits.
- They are derived by similar environmental constraints.
- They are a form of mutation.
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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
Which of the following is a change in the structure of a gene resulting in a variant that can be transferred to subsequent generations?
mutation
gene flow
trisomy
genetic drift
Which of the following is the best definition of a molecular marker?
a gene that is likely to be associated with a specific disease
a dark or light band that on a chromosome that is visible in a karyotype
a DNA sequence that varies among individuals
Chapter 20 Solutions
Biology 2e
Ch. 20 - Figure 20.6 At what levels are cats and dogs...Ch. 20 - Figure 20.10 Which animals in this figure belong...Ch. 20 - Figure 20.11 What is the largest clade in this...Ch. 20 - What is used to determine phylogeny? mutations DNA...Ch. 20 - What do scientists in the field of systematics...Ch. 20 - Which statement about the taxonomic classification...Ch. 20 - On a phylogenetic tree, which term refers to...Ch. 20 - Which statement about analogies is correct? They...Ch. 20 - What do scientists use to apply cladistics?...Ch. 20 - What is true about organisms that are a part of...
Ch. 20 - Why do scientists apply the concept of maximum...Ch. 20 - The transfer of genes by a mechanism not involving...Ch. 20 - Particles that transfer genetic material from one...Ch. 20 - What does the trunk of the classic phylogenetic...Ch. 20 - Which phylogenetic model proposes that all three...Ch. 20 - How does a phylogenetic tree relate to the passing...Ch. 20 - Some organisms that appear very closely related on...Ch. 20 - List the different levels of the taxonomic...Ch. 20 - Dolphins and fish have similar body shapes. Is...Ch. 20 - Why is it so important for scientists to...Ch. 20 - Describe maximum parsimony.Ch. 20 - Compare three different ways that eukaryotic cells...Ch. 20 - Describe how aphids acquired the ability to change...
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- Which of the following terms is the most broad? a phenotype b character c traitarrow_forwardWhich 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.arrow_forwardTo understand this research, you must be familiar with some basic genetic terminology. Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used. dominant allele phenotype The possession of two different alleles of a particular gene is referred to as Reset Help A variation in a DNA sequence at one particular position is called a heterozygosity genotype recessive allele homozygosity single nucleotide polymorphism The appearance of the organism, its observable traits, are referred to as the A variant of a gene for which an individual must be homozygous in order for it to influence the appearance of the organism is a The set of alleles an organism has for a particular trait is the organism's Submit Request Answerarrow_forward
- Which of the following types of macromolecules produced by one organism can “transform” another organism, giving it a new trait? Group of answer choices None of these are correct protein RNA DNA starcharrow_forwardIn the human genome there are some genes that are polymorphic. Polymorphic genes would be those genes that; Are often different from one individual to the next Are no longer coding for characteristics Are undergoing evolutionary conservation Are all the same in every personarrow_forwardCan you please explain each example why they are considered patterns or regularities involving Fibonacci sequence and the Golden ratio? A spiral staircase Cauliflower face Ear Tree branch Flower heads Flower petals Eye storm Human fetus Just a brief explanation. Please not plagiarized. I need it asap. Thank you tutors!arrow_forward
- Which one of the following options most accurately describes the process that generates the signature of a selective sweep in DNA sequence data? suppression of mutation over a long haplotype centered on a positively selected allele genetic hitchhiking of neutral alleles flanking the favored allele at the nucleotide site under positive selection O higher than average recombination around the core allele under positive selectionarrow_forwardA gene is (choose all that apply) Group of answer choices a basic unit of inheritance one of the main concepts in Darwin's famous theory a series of amino-acid producing codons a series of codons in between two terminating codons something inherited only from your fatherarrow_forwardWhich statement about the relationship between phenotypic and genetic attributes is correct? O a Usually phenotypically similar organisms are not genetically similar. O b Organisms with very similar morphology also have very similar genes. Genetically similar organisms can appear profoundly different morphologically. O d Analogous qualities among two species are similar due to shared ancestry.arrow_forward
- What is NOT true about mutations? Group of answer choices Without mutations, there would be no genetic variation Mutations are usually deleterious Mutations are a relatively weak force of evolution Mutations are always balanced with natural selectionarrow_forwardWhat does it mean when an individual is found to be “homozygous” at a DNA profiling locus? They have three alleles at the locus They got different alleles from their mother and father They got the same alleles from their mother and father Their children got two alleles from them Their children got no alleles from themarrow_forwardWhich one of the following statements best describes the difference between mutation and substitution in a population? Mutation is the origin of a new allele in an individual organism, and substitution is the evolutionary replacement of one allele by another. Mutation is the origin of a deleterious allele, and substitution is the increase in frequency of an advantageous allele by positive selection. Mutation is change in the DNA sequence within a functional gene, and substitution involves nucleotide changes in noncoding regions of the genome.arrow_forward
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