Podcast
Questions and Answers
Which of the following describes a person who is heterozygous for a gene?
Which of the following describes a person who is heterozygous for a gene?
- They have a 50% chance of passing on the gene to their offspring.
- They are affected by the genetic disorder associated with the gene.
- They have two identical alleles for the gene.
- They have two different alleles for the gene. (correct)
Which of the following is NOT a common cause of genetic mutations?
Which of the following is NOT a common cause of genetic mutations?
- Exposure to certain chemicals
- Exposure to UV radiation
- Inheritance of an altered gene from a parent
- Exposure to a cold virus (correct)
A woman with a normal genotype marries a man who has an X-linked recessive disorder. What is the probability that their daughter will be a carrier for the disorder?
A woman with a normal genotype marries a man who has an X-linked recessive disorder. What is the probability that their daughter will be a carrier for the disorder?
- 0%
- 50% (correct)
- 25%
- 100%
What is a key characteristic of multifactorial genetic disorders?
What is a key characteristic of multifactorial genetic disorders?
A positive result for a genetic mutation test indicates that:
A positive result for a genetic mutation test indicates that:
Pharmacogenomics plays a role in healthcare by:
Pharmacogenomics plays a role in healthcare by:
A couple has a son with hemophilia A. What is the chance their next child will be a carrier for the disorder?
A couple has a son with hemophilia A. What is the chance their next child will be a carrier for the disorder?
Which of the following statements accurately describes the inheritance of a genetic mutation from a parent?
Which of the following statements accurately describes the inheritance of a genetic mutation from a parent?
Flashcards
Heterozygous
Heterozygous
An individual with two different alleles for a gene.
Causes of genetic mutations
Causes of genetic mutations
Factors such as toxins, UV radiation, and inheritance that can alter genes.
X-linked recessive inheritance
X-linked recessive inheritance
A father with an X-linked disorder can pass the carrier status to his daughters only.
Multifactorial genetic disorders
Multifactorial genetic disorders
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Positive genetic mutation test
Positive genetic mutation test
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Pharmacogenomics
Pharmacogenomics
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Hemophilia A in offspring
Hemophilia A in offspring
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Carrier status
Carrier status
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Study Notes
Heterozygous Gene
- A heterozygous individual possesses two different alleles for a gene.
Genetic Mutations
- Common causes include DNA damage from toxins and UV radiation.
- Inheritance of altered genes from either parent also contributes.
X-linked Recessive Disorders
- A father with an X-linked recessive disorder will pass the carrier state to his daughters.
Multifactorial Disorders
- Multifactorial disorders result from complex interactions of genetic and environmental factors.
Positive Genetic Mutation Test
- A positive genetic mutation test indicates a gene alteration was found.
- It suggests a genetic disease predisposition and potential risk for other family members.
- It does not guarantee the development of the disease.
Pharmacogenomics
- Pharmacogenomics assesses how single genes affect drug responses and variability.
- This information can be used assess the effectiveness of a drug.
Hemophilia A
- If a couple has one child with Hemophilia, and they have a second child it is a 50% chance the child will be a carrier, if female. If male it will be a 100% chance the child will have hemophilia.
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