Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
11th Edition
ISBN: 9781337393096
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 11, Problem 16TYU
EVOLUTION LINK Darwin’s theory of evolution by natural selection is based on four observations about the natural world. One of them is that each individual has a combination of traits that makes it uniquely different. Darwin recognized that much of this variation among individuals must be inherited, but he did not know about Mendel’s mechanism of inheritance. Based on what you have learned in this chapter, briefly explain the variation among individuals that Darwin observed.
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Chapter 11 Solutions
Mindtap Biology, 1 Term (6 Months) Printed Access Card For Solomon/martin/martin/berg's Biology, 11th
Ch. 11.1 - Define the terms phenotype, genotype, locus,...Ch. 11.1 - Describe Mendels principles of segregation and...Ch. 11.1 - Distinguish among monohybrid, dihybrid, and test...Ch. 11.1 - Explain Mendels principles of segregation and...Ch. 11.1 - What is the maximum number of different alleles...Ch. 11.1 - Can Mendels principle of segregation be...Ch. 11.1 - Prob. 3CCh. 11.2 - PREDICT Use the rules of probability to answer the...Ch. 11.2 - In answering the previous question, did you use...Ch. 11.3 - Define linkage and relate it to specific events in...
Ch. 11.3 - Show how data from a two-point test cross can be...Ch. 11.3 - Discuss the genetic determination of sex and the...Ch. 11.3 - What ratio of genotypes to phenotypes is observed...Ch. 11.3 - Prob. 2CCh. 11.3 - CONNECT Two loci exhibit 5% recombination between...Ch. 11.3 - Which chromosome determines the male sex in humans...Ch. 11.3 - Prob. 5CCh. 11.4 - Explain some of the ways genes may interact to...Ch. 11.4 - Distinguish among incomplete dominance,...Ch. 11.4 - Prob. 11LOCh. 11.4 - Prob. 1CCh. 11.4 - What is the difference between multiple alleles...Ch. 11.4 - Prob. 3CCh. 11.4 - Prob. 4CCh. 11 - One of the autosomal loci controlling eye color in...Ch. 11 - The F1 flies described in question 1 were mated...Ch. 11 - The type of cross described in question 2 is (a)...Ch. 11 - Individuals of genotype AaBb were crossed with...Ch. 11 - Assume that the ratio of females to males is 1:1....Ch. 11 - Redgreen color blindness is an X-linked recessive...Ch. 11 - When two long-winged flies were mated, the...Ch. 11 - The long hair of Persian cats is recessive to the...Ch. 11 - Mr. and Mrs. Smith are concerned because their own...Ch. 11 - A walnut comb rooster is mated to three hens. Hen...Ch. 11 - Individuals of genotype AaBb were mated to...Ch. 11 - Genes A and B are 6 map units apart, and A and C...Ch. 11 - VISUALIZE Sketch a series of diagrams showing each...Ch. 11 - Can you always ascertain an organisms genotype for...Ch. 11 - CONNECT Compare the mechanisms of genetic...Ch. 11 - EVOLUTION LINK Darwins theory of evolution by...Ch. 11 - INTERPRET DATA Using the graph in Figure 11-20,...
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- In the time of Darwin the results of Mendel’s research on biological inheritance had not been published, Genetics was not yet developed, neither DNA nor the concept of genetic mutation were known. What is the modern darwinist theory that incorporates these bodies of knowledge?arrow_forwardGregor Mendel never saw a gene, yet he concluded that some inherited factors were responsible for the patterns of inheritance he observed in peas. Similarly, maps of Drosophila chromosomes (and the very idea that genes are carried on chromosomes) were conceived by observing the patterns of inheritance of linked genes, not by observing the genes directly. Is it legitimate for biologists to claim the existence of objects and processes they cannot actually see? How do scientists know whether an explanation is correct?arrow_forwardDarwin’s insights into the role of selection in evolution began with close observations of the enormous phenotypic variation among different pure-breeding varieties of domesticated pigeons. Study of varieties found in any domesticated species could provide similar insights. For comparison, we’d like to know what degree of phenotypic variation might be expected among the domesticated peas available to Mendel.a. Starting with an F1 hybrid heterozygous for phenotypically distinguishable allele pairs (one of which is completely dominant to the other) at 7 genes, how many different phenotypes would be expected in the F2 generation?b. It might take a large number of F2 individuals to observe all of these phenotypic combinations, depending on the frequency of the rarest phenotype. What is the expected rarest phenotype and what it its expected frequency among the F2 individuals?c. How many different phenotypes could have been observed in the F2 generation if all of the allele pairs of the 7…arrow_forward
- Gregor Mendel never saw a gene, yet he concluded that some inherited factors were responsible for the patterns of inheritance he observed in peas. Similarly maps of Drosophila chroma zones were conceived by observing the patterns of inheritance of linked genes, not by observing the genes directly. Is it legitimate for biologists to claim the existence of objects and processes they cannot actually see? How do scientists know whether an explanation is correct?arrow_forwardWhy are only inherited variations important in the evolutionary process? Explain your answer.arrow_forwardWOULD YOU HELP WITH BIOLOGYarrow_forward
- One of the lines of evidence that led Darwin to the theory of natural selection was his study of artificial selection. Plant breeders and pigeon breeders select offspring with specific traits in mind beforehand. a) However, since humans are an integral part of the natural world, do you think that artificial selection might be more appropriately termed “natural selection”? Why?arrow_forwardPart 1: Define natural selection. In your definition, be sure to explain whether selection acts on traits or genotypes, and what genomic patterns indicate selection has taken place at a locus. Part 2: Generally, would you expect selection to increase or decrease polygenicity of a trait? Explain why.arrow_forwardYou are studying a new allele of the yellow gene in pea plants (the gene that in Mendel’s experiments gave green peas with the yy allele combination). You refer to this new allele as y2. When you look at y2y2 homozygotes, you find that 80% of the peas are some shade of green and of these green peas 50% of them are the same full green shade as Mendel’s original yy allele and 50% of them are a shade that is halfway between yellow and green. Discuss these properties in terms of expressivity and penetrance.”arrow_forward
- Why are only inherited variations important in the evolutionary process? Explain your answer.arrow_forwardGenes and inheritance have an impact on the lives of parents and their progeny, the F1 and F2 generations. Population genetics also deals with genetics, but in a different way. What is the definition of population genetics? How can the abundance of an allele be different in a population as compared with an individual of the population? (Hint: How can the phenotype of a population differ from that of an individual? Can a population have red flowers, pink flowers, and white flowers? Can one individual have all three types of flowers?)arrow_forwardDarwin was the first person to note that evolutionary outcomes are probabilistic, meaning that they depend on the likelihood of outcomes rather than on certainties. Explain what this means in the context of Darwin’s theory of how evolution occurs? That is, how is Darwin’s theory is dependent upon the chances of a certain outcome and not on the absolute certainty of any particular outcome?arrow_forward
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