Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 11, Problem 3RQ
Summary Introduction
To define:
The term polygenic inheritance and the difference in the skin color of parents and their offspring.
Introduction:
The genes that are affecting a single
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What is Polygenic Inheritance?
A) When one gene has many effects
B) The additive effect of 2 or more genes
C) The genes that cause skin color
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Polygenic Inheritance: Cat Coat Color
Read aboutthe inheritance of cat coat color In each cat below, predict the phenotype of each genotype and color
in each catl Make sure you indicate whether each cat is male or female
One gene that affects coat color in
cats is an x linked gene we'll call the
pigment gene. One allele causes black
fur (X) and one allele gives the cat
orange fur (X"). These alleles act in a
codominant manner, because when a cat
has two different alleles (XB Xb), the cat
has a pattern called tortoise shell, where
the cat has both orange and black hairs.
The Y chromosome does not have this
coat color gene
There is another gene that affects coat
color in cats called the piebalding gene.
This gene is on an autosomal
chromosome and the alleles affect the
amount of white patches that appear in
the cat's coat, Some cats (ss) have o
white patches and their other colors are
blended, not patchy. Some cats (SS or
Ss) have white patches and their other
colors are…
Explain the central dogma of inheritance. Cite a specific example.
Chapter 11 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 11.1 - describe the relationships among chromosomes, DNA,...Ch. 11.1 - Prob. 2CYLCh. 11.2 - distinguish between self-fertilization and...Ch. 11.2 - Prob. 2CYLCh. 11.3 - Sudden Death on the court Many traits, in humans...Ch. 11.3 - describe the pattern of inheritance of a trait...Ch. 11.3 - Prob. 1TCCh. 11.3 - Prob. 2CYLCh. 11.3 - Prob. 3CYLCh. 11.4 - Prob. 1CYL
Ch. 11.4 - Prob. 1TCCh. 11.4 - Prob. 2CYLCh. 11.4 - Prob. 2TCCh. 11.4 - Prob. 3CYLCh. 11.5 - Prob. 1CSCCh. 11.5 - Prob. 1CYLCh. 11.5 - Prob. 1HYEWCh. 11.5 - Prob. 1TCCh. 11.5 - explain how polygenic inheritance and...Ch. 11.6 - describe how the patterns of inheritance differ...Ch. 11.7 - Prob. 1CYLCh. 11.7 - explain why most sex-linked traits are controlled...Ch. 11.7 - describe the pattern of inheritance of sex-linked...Ch. 11.8 - Prob. 1CSRCh. 11.8 - use pedigrees to determine the pattern of...Ch. 11.8 - Prob. 1ETCh. 11.8 - Prob. 1TCCh. 11.8 - Prob. 2CYLCh. 11.8 - Prob. 2ETCh. 11 - Prob. 1ACCh. 11 - An organism is described as Rr, with red coloring....Ch. 11 - In certain cattle, hair color can be red...Ch. 11 - Prob. 1MCCh. 11 - Define the following terms: gene, allele,...Ch. 11 - Prob. 2ACCh. 11 - Prob. 2FIBCh. 11 - Prob. 2GPCh. 11 - Prob. 2MCCh. 11 - Prob. 2RQCh. 11 - Prob. 3FIBCh. 11 - Prob. 3GPCh. 11 - Prob. 3MCCh. 11 - Prob. 3RQCh. 11 - Genes that are present on one sex chromosome but...Ch. 11 - Prob. 4GPCh. 11 - Prob. 4MCCh. 11 - Prob. 4RQCh. 11 - Prob. 5FIBCh. 11 - Prob. 5GPCh. 11 - Prob. 5MCCh. 11 - Prob. 5RQCh. 11 - Prob. 6GPCh. 11 - Prob. 6RQCh. 11 - In the couple described in Problem 6, the woman...
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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
- Skin color in humans is determined by polygenic inheritance, which means the more dominant alleles there are, the darker the skin color will be. A medium-toned skinned woman (AaBb) has a child with another medium-toned skinned man (AaBb). What is the probability of them having a very dark-toned skinned child? (Hint: the genotype is homozygous dominant)arrow_forwardDetermine the mode of inheritance: Homozygous recessive die from fatal disorder, when a specific enzyme activity is absent. Heterozygous exhibit wild type phenotype but have intermediate level of gene expression resulting in 1/2 of the wild type enzyme activity when compared to Homozygous normal non-carriers. Based on the levels of gene expression ALONE, the mode of inheritance is?‐---------------arrow_forwardExplain how polygenic inheritance differs from inheritance that is controlled by only one gene?arrow_forward
- Describe how polygenic inheritance may result in a continuum of phenotypes.arrow_forwardTwo brothers have thick hair that grows over their faces and most of their bodies. This human disorder, called Ambras Syndrome, shows x-linked dominant inheritance. The mother of the boys is also affected by Ambras Syndrome, although her excessive hair growth occurs in various, scattered patches on her skin rather than a continuous coverage like her sons. What is the most likely explanation for the patchy expression of hairlessness on the mother's skin? (2-3 sentences)arrow_forwardCompare and contrast the inheritance of recessive, dominant, and sex-linked genetic disorders.arrow_forward
- Skin color in humans is determined by a polygenic inheritance system. The husband is white while the wife is of Nigerian heritage. However, their two children are all light-skinned. How were the married couples able to have light-skinned babies. Are the odds to have a light-skinned baby one in a million? What are the possible genotypes of the husband and the wife and their children.arrow_forwardIn humans, normal skin color (A) is dominant over albino (a). An albino man marries a normal woman whose mother was an albino and whose father has normal skin color. What is the genotype of the man and the woman? What proportion of their children would be expected to be both normal skin pigmentation and have the trait for albino?arrow_forwardThe presence of freckles is a dominant trait. Cross a heterozygous freckled man with a nonfreckled woman. What are the genotypes and phenotypes of their offspring?arrow_forward
- Maternal influence is considered a transient inheritance, explain?arrow_forwardDefine polygenic inheritance. List two human straits that follow this pattern of inheritance.arrow_forwardThere are several possible modes of inheritance through which traits can be inherited. The following pedigree charts represent four different inheritance patterns. Match each type of inheritance with the correct pedigree numbered above. (Use each number only once.)X-linked recessive:X-linked dominant:Autosomal recessive:Autosomal dominant:arrow_forward
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