Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 27, Problem 5CONQ
The term polymorphism can refer to both genes and traits. Explain what is meant by a polymorphic gene and a polymorphic trait. If a gene is polymorphic, does the trait that the gene affects also have to be polymorphic? Explain why or why not.
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Chapter 27 Solutions
Genetics: Analysis and Principles
Ch. 27.1 - A gene pool is a. all of the genes in a single...Ch. 27.1 - 2. In natural populations, most genes...Ch. 27.1 - A gene exists in two alleles designatedDandd. If...Ch. 27.1 - Prob. 4COMQCh. 27.2 - Which of the following is a factor that, by...Ch. 27.3 - 1. Darwinian fitness is a measure...Ch. 27.3 - 2. Within a particular population, darkly colored...Ch. 27.3 - 3. A population occupies heterogeneous...Ch. 27.3 - Prob. 4COMQCh. 27.4 - 1. Genetic drift is
a. a change in allele...
Ch. 27.4 - 2. Which of the following influences on genetic...Ch. 27.5 - Gene flow depends on a. migration. b. the ability...Ch. 27.6 - 1. Inbreeding is sexual reproduction between...Ch. 27.7 - The mutation rate is a. the likelihood that a new...Ch. 27.7 - 2. The transfer of an antibiotic resistance gene...Ch. 27.7 - Prob. 3COMQCh. 27 - 1. What is the gene pool? How is a gene pool...Ch. 27 - Prob. 2CONQCh. 27 - Prob. 3CONQCh. 27 - Prob. 4CONQCh. 27 - The termpolymorphismcan refer to both genes and...Ch. 27 - Prob. 6CONQCh. 27 - For a gene existing in two alleles, what are the...Ch. 27 - 8. In a population, the frequencies of two...Ch. 27 - The ability to roll your tongue is inherited as a...Ch. 27 - What evolutionary factors can cause allele...Ch. 27 - What is the difference between a neutral and an...Ch. 27 - Prob. 12CONQCh. 27 - Prob. 13CONQCh. 27 - Describe the similarities and differences among...Ch. 27 - 15. Is each of the following examples due to...Ch. 27 - Prob. 16CONQCh. 27 - Prob. 17CONQCh. 27 - 18. A group of four birds flies to a new location...Ch. 27 - 19. Describe what happens to allele frequencies as...Ch. 27 - With regard to genetic drift, are the following...Ch. 27 - When two populations frequently intermix due to...Ch. 27 - Two populations of antelope are separated by a...Ch. 27 - Prob. 23CONQCh. 27 - 24. Using the pedigree shown here, answer the...Ch. 27 - A family pedigree is shown here. A. What is the...Ch. 27 - 26. A family pedigree is shown here.
A. What is...Ch. 27 - Prob. 27CONQCh. 27 - Prob. 28CONQCh. 27 - 1. You will need to be familiar with the...Ch. 27 - You will need to refer to question 2 in More...Ch. 27 - Prob. 3EQCh. 27 - Prob. 4EQCh. 27 - You will need to refer to question 2 in More...Ch. 27 - Prob. 6EQCh. 27 - Prob. 7EQCh. 27 - In the Grants study of the medium ground finch, do...Ch. 27 - 9. A recessive lethal allele has achieved a...Ch. 27 - Among a large population of 2 million gray...Ch. 27 - In a donor population, the allele frequencies for...Ch. 27 - Prob. 12EQCh. 27 - Prob. 13EQCh. 27 - Prob. 14EQCh. 27 - 15. What would you expect to be the minimum...Ch. 27 - Discuss examples of positive and negative...Ch. 27 - Discuss the role of mutation in the origin of...Ch. 27 - Prob. 3QSDC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Multiple alleles is described when a trait is controlled by more than two alleles, and that even if a trait is controlled by more than two alleles each offspring still only inherits two. Epistasis occurs when the expression of a gene is controlled by the expression of another gene Lethal alleles or lethal genes are alleles that cause the death of the organism that carries them. Lethal alleles are recessive, dominant, or conditional depending on the genes involved. It can lead to the death of an organism and it can manifest early in development. Are these alleles common or rare in humans? Answer this question in not more than 3 sentences.arrow_forwardIn giraffes, long neck is dominant to short neck. Long neck is denoted by the dominant allele, N, while short neck is denoted by a recessive allele, n. Write the genotype and phenotype for the following organisms: homozygous dominant organism, homozygous recessive organism, and heterozygous organism.arrow_forwardWith regard to the ABO blood types in humans, determine the genotypes of the individuals below: John: John is blood type A and his mom was type B Genotype = Jane: Jane is blood type B and her dad was type O Genotype John and Jane have kids. What are the possible blood types of their offspring, including the expected ratio of each? O John is A1", Jane is l'i, the blood type ratios of their children would be: 1 AB: 1A : 1B John is IA, Jane is l1", the blood type ratios of their children would be: 1 AB: 1 B John is 1Ai. Janc is iP1P, the blood typc ratios of their children would be: 1 AB: 1 A: 1B John is Jane is IPi, the blood type ratios of their children would be 1 AB : 1A 1B:10arrow_forward
- Briefly describe what is a meaning of genetic variation.arrow_forwardExplain what is meant by a recessive allele? What makes an allele recessive? Explain why there can be many versions of a recessive allele that produce the same phenotype?arrow_forwardFur color in cats is a codominant trait and is located on the X chromosome. Cats can be black, yellow or calico. A calico cat has black and yellow splotches. In order to be calico, the cat must have an allele for the black color and an allele for the yellow color. Use a Punnett square to show why there are no male calico cats.arrow_forward
- IN TRANSYLVANIA, SOME PEOPLE EXHIBIT TWO UNUSUAL TRAITS IN WHICH THEY HAVE VERY LONG FRONT TEETH AND THE INABILITY TO BE AWAKE WHEN THE SUN IS UP. BOTH OF THESE TRAITS APPEAR TO BE RECESSIVE. IF A WOMAN WHO IS HETEROZYGOUS FOR TEETH AND HOMOZYGOUS NORMAL FOR BEING IN THE SUN MARRIES A MAN WHO HAS BOTH THESE TRAITS, WHAT COULD BE THE PHENOTYPES AND GENOTYPES OF THEIR CHILDREN? USE A PUNNET SQUARE AND SHOW ALL WORK. LIST THE RATIOS FOR THE GENOTYPES AND PHENOTYPES.arrow_forwardThe diagram below describes the relationships of genes, alleles, and loci of genetics and how a genotype manifests as a phenotype using the pea plant flower as an example. In this case, the genotype is heterozygous, meaning that the plant carries two different alleles of the gene. Think of a scenario where you have a pea plant that is homozygous recessive in flower color. Determine the phenotype of the flower color for this plant and describe how the phenotype is derived based on the information provided in the below diagram. Make sure to include the following terms, gene, allele, locus, enzyme, and gene expression, in your discussion.arrow_forwardIf a B is a dominant allele that codes for a trait where the bearer of this allele has a black coat, and b is a recessive allele where the bearer has a brown coat, the recessive genotype will exhibit the phenotype of brown coat, the genotype will have the black coat phenotype, and the dominant genotype will have the black coat phenotype. (Use either heterozygous or homozygous in the blanks.)arrow_forward
- Which of the following statements describes the multifactorial inheritance in genetics? Question options: One locus is associated with different traits. Several loci are associated with the trait. One locus is associated with variable phenotypes of a trait. Environment plays minimal or no role in the final phenotype. Phenotype is determined by different environmental factors.arrow_forwardThe following pedigree is for myopia (near-sightedness) in humans. Predict whether the disorder is inherited as the result of a dominant or recessive trait. Determine also the most probable genotype for each individual based on your prediction. Use the proper symbol for the alleles.arrow_forwardIn humans, there is a gene called sickle-cell anemia, which produces severe anemia when homozygous recessive. The name of the disease comes from the fact that many red blood cells take on abnormal sickle shape. People homozygous recessive for this trait usually die before adulthood. Heterozygous people appear normal, but when a sample of the blood is held under low oxygen concentration, the red cells take on the sickle shape. A young woman about to be married is concerned about her future children because her brother died of sickle-cell anemia. A sample of her blood sickles under low oxygen concentration, but that red blood of her perspective husband remains normal. What can you say about the woman and the man, and about their future children?arrow_forward
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