BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 23.1, Problem 2LO
Summary Introduction
To determine: The reason that
Introduction: The phenotypic similarity is the easily observable similarity. The genetic content of an individual is responsible for the phenotypic characteristics.
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Chapter 23 Solutions
BIOLOGY
Ch. 23.1 - Prob. 1LOCh. 23.1 - Prob. 2LOCh. 23.2 - Prob. 1LOCh. 23.2 - Prob. 2LOCh. 23.2 - Demonstrate how a cladogram is constructed.Ch. 23.3 - Explain the taxonomic classification system.Ch. 23.3 - Prob. 2LOCh. 23.3 - Prob. 3LOCh. 23.4 - Prob. 1LOCh. 23.4 - Prob. 2LO
Ch. 23.4 - Prob. 3LOCh. 23.5 - Prob. 1LOCh. 23 - Construct a data matrix like the one in figure...Ch. 23 - Prob. 1IQCh. 23 - Prob. 2IQCh. 23 - Prob. 3IQCh. 23 - Prob. 4IQCh. 23 - Overall similarity of phenotypes may not always...Ch. 23 - a. is based on overall similarity of phenotypes....Ch. 23 - The principle of parsimony a. helps evolutionary...Ch. 23 - Parsimony suggests that parental care in birds,...Ch. 23 - The forelimb of a bird and the forelimb of a...Ch. 23 - In order to determine polarity for different...Ch. 23 - In a paraphyletic group a. all species are more...Ch. 23 - A paraphyletic group includes a. an ancestor and...Ch. 23 - Prob. 9UCh. 23 - A taxonomic group that contains species that have...Ch. 23 - Rapid rates of character change relative to the...Ch. 23 - Species recognized by the phylogenetic species...Ch. 23 - Prob. 1SCh. 23 - Identifying outgroups is a central component of...Ch. 23 - As noted in your reading, cladistics is a widely...Ch. 23 - Across many species of limpets, loss of larval...Ch. 23 - Birds, pterosaurs (a type of flying reptile that...Ch. 23 - AID:1825 | 10/04/2018 6. In what sense does the...
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- Remember that understanding is explanations more than facts. Definitions of phenotype, genotype, allele, gene, microevolution, macroevolution Know that in humans, most of the genetic variation is observed within populations, and know why that is. Know the 4 processes of evolution (3 neutral + natural selection) Know that evolution isn't progressive and doesn't necessarily lead to more complexity Know that evolution can lead to traits that decrease survival (ex: sexual selection) Know that quantitative traits are generally influenced by (i) many genes, each having a small effect on the trait value; and (ii) the environment What is F1 like when you cross 2 homozygotic lines of peas of different colors? What is F2 like when you cross F1 individuals (remember what 9:3:3:1 is about) Know what genetic dominance is about Definitions of chromosome, nucleus, mitosis, meiosis, crossing over How many chromosomes in humans? How many pairs of chromosomes? Know and apply Hardy-Weinberg's equation…arrow_forward"Ancestry tests" are sold by many companies. There are significant limitations to these tests. Why is this the case? High rates of gene flow between populations reduce the reliability with which any sequence can demonstrate membership in one particular population. Evaluating too few genetic loci, of which just a small number happen to be similar, can lead to the conclusion that individuals are much more genetically similar than they actually are. A DNA match between two individuals living today is not a match with an ancestor. Rather, it suggests that the two people may have inherited the DNA sequence from a common ancestor. all of these are limitations to "Ancestry tests" O High genetic variation among individuals within most populations makes it difficult to identify specific sequences that can reliably indicate membership in a population.arrow_forwardExplain the term outbreeding.arrow_forward
- In your own words, explain the difference between ancestral and derived traits.arrow_forward(Practice Hint: Click or tap your finger on the text in the box to make your selection.) A student is researching why domestic cats often have white patches of fur. The student reads the paragraph shown and makes the following conclusion: "Domestic cats with white fur evolved from wildcats through artificial selection." Select the sentence in the paragraph that best supports the student's conclusion. During embryonic development, certain stem cells determine whether a kitten will be born with solid-color fur or with white patches of fur. Wildcats are the genetic ancestors of the domestic cat and have fur color that blends into their environment. Wildcats that eliminated pests and were less afraid of humans were useful for protecting harvested grains. These cats were cared for by humans and were selected to reproduce. O During embryonic development, certain stem cells determine whether a kitten will be born with solid-color fur or with white patches of fur. Wildcats are genetic…arrow_forwardWhat evolutionary factors can cause allele frequencies to change and possibly lead to a genetic polymorphism? Discuss the relative importance of each type of process.arrow_forward
- Since nucleotide sequences are more variable than amino acid sequences, you’ll use GAPDH nucleotide sequences to compare across the six taxa you’re analyzing. Suppose that you used BLAST to align all possible pairs of GAPDH sequences among lancelet, lamprey, bass, frog, turtle, and leopard. You would be able to construct the following table showing the percent similarity values across all six taxa. Leopard Turtle Frog Bass Lamprey Lancelet Leopard 100% 83% 80% 81% 76% 74% Turtle – 100% 79% 79% 74% 72% Frog – – 100% 79% 74% 71% Bass – – – 100% 77% 74% Lamprey – – – – 100% 73% Lancelet – – – – – 100% Now you can use this data (similarly to how you used the data in the character table) to build a phylogenetic tree. The distance between species in a tree is directly related to the amount of similarity between their gene sequences. For instance, two species will be closer together if the amount of similarity is high, or far apart if the amount of similarity is low. Which…arrow_forwardEvolution is driven by both nonrandom and random mechanisms. Identify the mechanisms of evolution that are random and comment on how they affect allele frequencies across generations.arrow_forwardHereditary genetics Population genetics Molecular genetics Answer Bank expressing exogenous transgenes to understand function calculating genotype frequencies to understand phenotype changes in a population researching how genetic drift impacted many species over the past thousand years observing phenotypes in offspring to understand gene inheritance studying DNA-protein interactions to understand gene regulation tracing pedigrees to determine patterns of gene transmission within a familyarrow_forward
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