Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 14, Problem 2SQ
Summary Introduction
Introduction: A pedigree depicts the interrelationships between parents and offspring over generations for a particular trait. It is also referred to as a family tree. The individuals and relations are denoted by symbols and lines. It contributes in predicting the occurrence of that trait in future generations through inheritance patterns and genotyping the individuals.
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Students have asked these similar questions
Pedigree analysis is necessary when studying human inheritance patterns because . a. humans have more than 20,000 genes b. of ethical problems with experimenting on humans c. inheritance in humans is more complicated than it is in other organisms d. genetic disorders occur only in humans
. Which of the following terms applies to traits, such as human eye color, that are controlled by more than
one gene?
A. Codominant
B. Polygenic
C. Recessive
D. Sex-linked
The flower color gene studied by Mendel affected three traits. This is an example of ________.
a.
pleiotropic genes
b.
codominant inheritance
c.
polygenic inheritance
Chapter 14 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 14 - Constructing a pedigree is particularly useful...Ch. 14 - Prob. 2SQCh. 14 - Prob. 3SQCh. 14 - Prob. 4SQCh. 14 - Prob. 5SQCh. 14 - A trait that is present in a male child but not in...Ch. 14 - Color blindness is a case of ______ inheritance....Ch. 14 - A female child inherits one X chromosome from her...Ch. 14 - Prob. 1DAACh. 14 - Prob. 2DAA
Ch. 14 - Prob. 3DAACh. 14 - Prob. 9SQCh. 14 - Expression of the SRY gene on the Y chromosome...Ch. 14 - Prob. 11SQCh. 14 - Prob. 12SQCh. 14 - Prob. 13SQCh. 14 - Prob. 14SQCh. 14 - Match the chromosome terms appropriately. ____...Ch. 14 - Prob. 1GPCh. 14 - Does the phenotype indicated by the red circles...Ch. 14 - Human females have two X chromosomes (XX); males...Ch. 14 - A mutated allele responsible for Marfan syndrome...Ch. 14 - The somatic cells of most individuals with Down...Ch. 14 - Mutations in the genes for clotting factor VIII...
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- Figure 16.4 Two common patterns of autosomal inheritance in humans. & Both parents are heterozygous. b. One parent is heterozygous, and the other is homozygous recessive. The alleles stands for any trait that is dominant, and the letter a stands for any trait that is recessive Substitute the correct alleles for the problems you are working on. For example, C normal, c- cystic fibrosis Parents d 9 A A An X eggs Offspring m Key Dominant allele Recessive allele Dominant phenotype Recessive phenotype Phenotypic Ratio words A a Parents AT X Ag 40 eggs Offspring an A An an Key A Dominant allele Recessive allele Dominant phenotype Recessive phenotype Phenotypic Ratio Autosomal Disorders 1. Neurofibromatosis (NF), sometimes called von Recklinghausen disease, is one of the most common genetic disorders. It affects roughly 1 in 3,000 people. At birth or later, the affected individual may have six or more large, tan spots on the skin. Such spots may increase in size and number and become darker.…arrow_forwardAlleles for Tay-Sachs disease are inherited in an autosomal recessive pattern. Why would two parents with a normal phenotype have a child with Tay-Sachs? a. Both parents are homozygous for a Tay-Sachs allele. b. Both parents are heterozygous for a Tay-Sachs allele. c. New mutations gave rise to Tay-Sachs in the child. d. b or carrow_forwardMarfan Syndrome is a dominant trait inheritance in humans. It is a disorder that affects the connective tissue in many parts of the body. 1. What is/are the possible genotype/s of the mother if her husband does not exhibit the disease, but their children unfortunately got the disease? A. MM or Mm B. Mm only C. MM only D. mm only E. Mm or mm 2. What is/are the possible genotype/s of the children if both parents do not exhibit Marfan Syndrome disease? A. mm only B. Mm only C. MM only D. MM or Mm E. Mm or mm 3. What is the probability of having a normal child if the mother does not have the disease while her husband has the disease? A. 0% only B. 0% or 100% C. 0% or 50% D. 50% only E. 100% 4. What is the probability of having a girl child with Marfan Syndrome if both mother and father has the heterozygous genotype for the disease? A. 1/4 B. 1/2 C. 3/4 D. 3/8 E. 1/8arrow_forward
- The difference between dominant and recessive traits is … Group of answer choices: A.genes for dominant traits are passed on preferentially. B.effects of recessive traits can be hidden by effects of dominant traits. C.recessive traits are deleterious (bad for the organism) and dominant traits are not. D.dominant genes produce proteins, recessive genes do not. E.dominant traits are more likely to be expressed in males.arrow_forwardWhen a disease is due to polygenic inheritance, the following is probably true: A. Many factors, both genetic and environmental, contribute to the disease traits. B. It is caused by one gene with a large number of alleles. C. It affects a large number of people. D. It has many different symptomsarrow_forwardMarfan Syndrome is a dominant trait inheritance in humans. It is a disorder that affects the connective tissue in many parts of the body. 1. What is/are the possible genotype/s of the children if both parents do not exhibit Marfan Syndrome disease? A. mm only B. Mm only C. MM only D. MM or Mm E. Mm or mm 2. What is the probability of having a normal child if the mother does not have the disease while her husband has the disease? A. 0% only B. 0% or 100% C. 0% or 50% D. 50% only E. 100% 3. What is the probability of having a girl child with Marfan Syndrome if both mother and father has the heterozygous genotype for the disease? A. 1/4 B. 1/2 C. 3/4 D. 3/8 E. 1/8 PLEASE ANSWER ALL THE QUESTIONS BECAUSE THEY ARE CONNECTED, THANK YOU!arrow_forward
- A test cross is performed to determine if a specific individual is a carrier. The results generate a 50/50 ratio of phenotypes. The test subject is therefore ________. A. Unable to reproduce B. Homozygous recessive C. Not following the rules of Mendelian genetics D. Homozygous dominant E. Heterozygousarrow_forwardIdentify genetic terms and basic principles of genetics as applied to blood groups, sex-linkage, and other inherited characteristics. a. Genetics b. Inheritance theory c. Sex-linked characteristics d. Linkagearrow_forwardX-linked recessive traits in humans (or in Drosophila) are observed ________. a. in more males than females b. in more females than males c. in males and females equally d. in different distributions depending on the traitarrow_forward
- Joe has classic hemophilia, an X-linked recessive disease. Could Joe have inherited the gene for this disease from the following people? Yes No a. His mother's mother b. His mother's father c. His father's mother d. His father's fatherarrow_forwardMany genetic disorders are inherited in a recessive manner Select one: a. False b. Truearrow_forward... Answer and explainarrow_forward
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