Multiple Choice
If a genetic counselor was examining a pedigree chart and noticed an occurrence of a disease in every generation, the counselor would most likely assume that the disease was caused by:
13. Mendelian Genetics
Autosomal Inheritance
Back13. Mendelian Genetics
Autosomal Inheritance
- Multiple Choice
The pedigree chart shown depicts the inheritance pattern of __________.
- Multiple Choice
Determine the likely pattern of inheritance in the following pedigree. List the genotypes of the numbered individuals in this order: #1, #2, and #3.
- Open Question
The following pedigree is for the ABO blood type group, which is an example of autosomal inheritance. Using the IA, IB, i for the alleles, fill in the top half of each box/circle with the genotype. Also, fill in the bottom half of each box/circle with the phenotype (A, B, AB, or O blood type). If it is impossible to know for certain a specific allele in the genotype, then place a '?' as a placeholder to represent the allele that is in question.
- Multiple ChoiceThe genetic disease cystic fibrosis is caused by a defective allele that __________.
- Multiple ChoiceTom's brother suffers from phenylketonuria (PKU), a recessive disorder. Tom and the brother's parents do not have PKU. What are the chances that Tom is a carrier of the recessive PKU allele?
- Multiple ChoiceA couple, both descended from eastern European (Ashkenazic) Jews, visit a genetic counselor before trying to have children. In view of their ethnic background, the counselor recommends that they be tested to see if they are carriers for __________.
- Multiple ChoiceCystic fibrosis, which is usually lethal before the age of reproduction, is a homozygous recessive trait. Why do cases continue to arise, even though people with the disease rarely live to reproduce?
- Multiple ChoiceWhat kind of protection does the Genetic Information Nondiscrimination Act of 2008 provide the public with regard to the use of genetic information?
- Multiple ChoiceIn which genetic testing procedure would a physician remove a small tissue sample from a membrane of fetal genetic origin?
- Multiple ChoiceFetal cells may be removed along with fluid from the womb by a process known as __________.
- Multiple ChoiceWhen two average-height parents give birth to a child exhibiting achondroplasia, it is most likely due to a new mutation. This is because __________.
- Multiple ChoiceHuntington's disease is an example of a genetic disorder caused by __________.
- Multiple ChoiceIt is far more common to find human genetic disease caused by __________ alleles than by __________ alleles because __________.
- Open QuestionHemochromatosis is an inherited disease caused by a recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of each of the following?a. All three children are of normal phenotype.b. One or more of the three children have the disease.c. All three children have the disease.d. At least one child is phenotypically normal.