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Questions and Answers
What is the probability that a child of two healthy carriers for an autosomal recessive disease will be affected?
What is the probability that a child of two healthy carriers for an autosomal recessive disease will be affected?
An individual with 47 chromosomes, including an extra chromosome 13, is categorized as which type?
An individual with 47 chromosomes, including an extra chromosome 13, is categorized as which type?
What is the probability that a male child of a healthy carrier woman will inherit Duchenne muscular dystrophy?
What is the probability that a male child of a healthy carrier woman will inherit Duchenne muscular dystrophy?
How many autosomes are found in a haploid human genetic set?
How many autosomes are found in a haploid human genetic set?
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Which statement accurately describes a dominant character?
Which statement accurately describes a dominant character?
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If a black female rabbit (whose mother was white) is crossed with a white male, what is the probability of black offspring?
If a black female rabbit (whose mother was white) is crossed with a white male, what is the probability of black offspring?
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What is the karyotype associated with Down syndrome?
What is the karyotype associated with Down syndrome?
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What can be defined as aneuploidy?
What can be defined as aneuploidy?
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What genotype allows a male subject to express an autosomal dominant disease while his partner is unaffected?
What genotype allows a male subject to express an autosomal dominant disease while his partner is unaffected?
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Which karyotype corresponds to a female with Turner syndrome?
Which karyotype corresponds to a female with Turner syndrome?
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What condition is characterized by both gain and loss of genetic material due to a reciprocal balanced translocation?
What condition is characterized by both gain and loss of genetic material due to a reciprocal balanced translocation?
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Which technique for prenatal diagnosis is typically performed around the 15th week of gestation?
Which technique for prenatal diagnosis is typically performed around the 15th week of gestation?
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Which term describes the occurrence of different mutations within the same gene causing the same monofactorial disease?
Which term describes the occurrence of different mutations within the same gene causing the same monofactorial disease?
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In the context of genetic counseling, how does consanguinity affect the risk of recessive inheritance diseases?
In the context of genetic counseling, how does consanguinity affect the risk of recessive inheritance diseases?
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What is the karyotype associated with Klinefelter syndrome?
What is the karyotype associated with Klinefelter syndrome?
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Which of the following best describes the inheritance pattern of a disease that affects both males and females equally and shows up in every generation?
Which of the following best describes the inheritance pattern of a disease that affects both males and females equally and shows up in every generation?
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Study Notes
Genetics Questions and Answers
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Question 1: Two healthy carriers for an autosomal recessive disease have a child. What is the probability their first child will have the disease?
- 25%
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Question 2: A male with 47 chromosomes, including an extra chromosome 13, is described as:
- Trisomic
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Question 3: Duchenne muscular dystrophy is X-linked recessive. A healthy carrier woman has a male child. What is the probability the child will have the disease?
- 50%
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Question 4: How many autosomes are present in a human haploid set?
- 22
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Question 5: A dominant trait:
- Manifests in both homozygous and heterozygous individuals
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Question 6: In rabbits, black fur is dominant to white. A black female whose mother was white is crossed with a white male. What is the probability of having black offspring?
- 50%
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Question 7: A heterozygous individual for an autosomal recessive mutation marries a homozygous affected individual. What is the probability of having an affected child?
- 100%
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Question 8: What is the karyotype for Down Syndrome?
- 47, (+21)
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Question 9: What can aneuploidy involve?
- A chromosome number that is one unit less than the normal number.
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Question 10: A white male horse is crossed with a gold female horse. Genes for color are: WW = brown, Ww = gold, ww = white. What is the expected phenotype frequency in the offspring?
- 50% gold, 50% white
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Question 11: In a genotype, alleles from a gene are:
- One from each parent
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Question 12: Cystic fibrosis is autosomal recessive. A carrier individual is:
- Heterozygous
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Question 13: In a balanced reciprocal translocation:
- There is no net gain or loss of genetic material
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Question 14: What is the karyotype for Klinefelter syndrome?
- 47, XXY
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Question 15: Which prenatal diagnostic technique is performed around week 15?
- None of the options listed were the correct answer for this question.
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Question 16: A male with an autosomal dominant disorder marries a healthy woman. What is the risk of having an affected child?
- 50%
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Question 17: If variations are due to different mutations in the same gene, they describe:
- Allelic heterogeneity
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Question 18: Karyotype 45X is most appropriate for which condition?
- Turner syndrome
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Question 19: Consanguinity between spouses is important in the risk of recurrence for:
- Recessive genetic diseases
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Question 20: What is the most probable inheritance pattern in a given pedigree?
- Could not be determined from the provided information.
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Description
Test your knowledge on genetics with this quiz that covers key concepts like autosomal recessive diseases, chromosomal abnormalities, and inheritance patterns. Explore questions about probabilities related to genetic traits and understand the principles of dominant and recessive alleles in various organisms.
