BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
2020th Edition
ISBN: 9780135686553
Author: Audesirk
Publisher: PEARSON
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Chapter 11, Problem 2FTB
The inheritance of multiple traits depends on the locations of the genes that control the traits. If the genes are on different chromosomes, then the traits are inherited__________ (as a group/independently). If the genes are located close together on a single chromosome, then the traits tend to be inherited__________ (as a group/independently).
Genes on the same chromosome are said to be___________.
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A sex-influenced trait in humans is one that affects the length of the index finger. A “short” allele is dominant in males and recessive in females. Heterozygous males have an index finger that is significantly shorter than the ring finger. The gene affecting index finger length is located on an autosome. A woman with short index fingers has children with a man who has normal index fingers. They produce five children in the following order: female, male, male, female, male. The oldest female offspring marries a man with normal fingers and then has one daughter. The youngest male among the five children marries a woman with short index fingers, and then they have two sons. Draw the pedigree for this family. Indicate the phenotypes of every individual (filled symbols for individuals with short index fingers and open symbols for individuals with normal index fingers).
Colour blindness is caused by a sex-linked, recessive gene. If a woman, whose father was colour blind, marries a man with normal colour vision, what percentage of their children will be colour blind? Show using a Punnet square cross
Which of the following defines polygenic inheritance?
An inheritance pattern in which one allele is not fully dominant over another, so the heterozygous phenotype is an intermediate blend of the two homozygous phenotypes
An inheritance pattern in which the full and separate phenotypic effects of two alleles are apparent in heterozygous individuals
An inheritance pattern in which a single gene affects multiple traits
A pattern of inheritance in which multiple genes affect one trait
Chapter 11 Solutions
BIOLOGY: LIFE ON EARTH-W/MASTERING ACCE
Ch. 11 - The physical position of a gene on a chromosome is...Ch. 11 - If an organism has two different alleles (call the...Ch. 11 - Independent assortment means that a. two genes...Ch. 11 - If a gene is located on the X chromosome of a...Ch. 11 - 5. A test cross is used to determine
a. the...Ch. 11 - An organism is described as Rr, with red coloring....Ch. 11 - 2. The inheritance of multiple traits depends on...Ch. 11 - Prob. 3FTBCh. 11 - 4. Genes that are present on one sex chromosome...Ch. 11 - 5. When the phenotype of heterozygotes is...
Ch. 11 - 1. Define the following terms: gene, allele,...Ch. 11 - 2. Explain why genes located on the same...Ch. 11 - 3. Define polygenic inheritance. Why does...Ch. 11 - What is sex linkage? In mammals, which sex would...Ch. 11 - What is the difference between a phenotype and a...Ch. 11 - 6. In the pedigree of part (a) of Figure 11–22, do...Ch. 11 - Sometimes the term gene is used rather casually....Ch. 11 - In an alternate universe, all the genes in all...
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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
- Albinism is a recessive genetic condition in which a person lacks pigment that gives color to the skin. If the allele for albinism is represented as "a," and the functional allele is represented as "A," what will be the genotype of a person with albinism? Aa or AA Aa or aa AA aaarrow_forwardA sex-influenced trait in humans affects the length of the index finger. A short allele is dominant in males and recessive in females.Heterozygous males have an index finger that is significantly shorterthan the ring finger. The gene affecting index finger length is locatedon an autosome. A woman with short index fingers has childrenwith a man who has normal index fingers. They produce five children in the following order: female, male, male, female, male. Theoldest female offspring has one daughter with a man who has normal fingers. The youngest male among the five children has childrenwith a woman with short index fingers; they have two sons. Drawthe pedigree for this family. Indicate the phenotypes of every individual (filled symbols for individuals with short index fingers andopen symbols for individuals with normal index fingers)arrow_forwardIf a trait is X-linked dominant, who would express the trait? A) females homozygous for the dominant allele and males hemizygous for the recessive allele B) heterozygous females and males hemizygous for the dominant allele C) females homozygous for the recessive allele and males hemizygous for the recessive allele D) females homozygous for the recessive allele and males hemizygous for the dominant allele E) significantly more females than malesarrow_forward
- If a trait is X-linked recessive, who would express the trait? A) females homozygous for the dominant allele and males hemizygous for the recessive allele B) heterozygous females and males hemizygous for the dominant allele C) females homozygous for the recessive allele and males hemizygous for the recessive allele D) females homozygous for the recessive allele and males hemizygous for the dominant allele E) the same proportions of females and malesarrow_forwardBased on the observed inheritance pattern and ratio of phenotypes, what are the genotypes of the affected children? a) If c- = Cystic Fibrosis, the children are c-/c-. b) If c- = Cystic Fibrosis, the children are C/C. c) If c- = Cystic Fibrosis, the children are C/c-. d) If c- = Cystic Fibrosis, the children are C.arrow_forwardMultiple 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_forward
- Use a punnett square to calculate the following: George is the youngest child in a family that includes 4 children. All of the children have the recessive phenotype-attached earlobes. However both parents have unattached earlobes, the dominant trait. Use the letters G, g and answer the following: What is the genotype of the mother? What is the genotype of the father? What percentage of the offspring would express the recessive trait?arrow_forwardThe gene for eye color has several alleles. The allele for brown eyes is symbolized with B and the allele for blue eyes is symbolized with b. A father has the phenotype of blue eyes (recessive trait) and a mother has a phenotype of brown eyes (dominant trait.). If they have a child, what is the most likely genotype? Bb bb BB none of thesearrow_forwardBased on the observed inheritance pattern and ratio of phenotypes, what are the genotypes of the affected children? Select an answer and submit it. For keyboard navigation, use the up/down arrow keys to select an answer. a) If c- = Cystic Fibrosis, the children are c-/c-. b) If c- = Cystic Fibrosis, the children are C/C. c) If c- = Cystic Fibrosis, the children are C/c-. d) If c- = Cystic Fibrosis, the children are C.arrow_forward
- A woman afflicted with a certain illness marries a normal man. They have four children (two boys and two girls); all boys have their mother's illness, but none of the girls have it. See individuals outline by blue square in the family tree below which indicates these individuals. Their children marry and have children of their own. Their family tree is shown below. What inheritance is it suggested? Give an explanation for your answer. Determine the genotype of all individuals seen the family tree above (use table below): Generation Individuals I 1. 2. II 3. 4. 5. 6. 7. 8. II 9. 10. 11. 12. 13. 14. 15.arrow_forward____traits are impacted by the function of multiple genes, whereas pleiotropic genes impact multiple _____ the choices are: polygenic, epistatic, dominant, recessive, alleles, chromosomes, phenotypes, individualsarrow_forwardRed-green colorblindness is a recessive trait that is located on the X chromosome. A woman named Eve, who is not colorblind, has a mother that is not colorblind and is not a carrier, and a father who is colorblind. Predict the probability of Adam and Eve having a daughter colorblind, a daughter having normal vision, a son being colorblind, and a son having normal vision. Explain your reasoning.arrow_forward
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