Both members of a couple know that they are carriers of the cysticfibrosis allele. None of their three children has cystic fibrosis, but anyone of them might be a carrier. The couple would like to have a fourthchild but are worried that he or she would very likely have the disease,since the first three do not. What would you tell the couple? Would itremove some uncertainty from their prediction if they could find outwhether the three children are carriers?

Q: Muscular Dystrophy is an X linked recessive disease. Maria and Nick are getting genetic counseling…

A: Answer : Given that, Muscular Dystrophy is an X linked recessive disease, this means the disease…

Q: A man, Penoy, whose sister died in early childhood from a recessive lethal disease marries a woman…

A: In the given scenario, as the male survived beyond childhood but is a carrier of the disease, it…

Q: Bob and Joan know from a blood test that they are each heterozygous (carriers) for the autosomal…

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Q: John has unattached earlobes (dominant) like his father, but his mother has attached earlobes…

A: Let’s denoted the allele for unattached earlobes as A and allele for attached earlobes as aThe…

Q: Inigo Montoya is healthy but his mother had the recessive condition, cystic fibrosis, which is…

A: Cystic fibrosis is a disease that is inherited in an autosomal recessive manner. An affected…

Q: Mary and Dai both have freckles (a dominant trait). Their first child, Mariko, does not have…

A: Genetics is the study of genes, heredity, and genetic variation in an organism. Living organisms…

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A: A group of hereditary disease known as galctosemia which means galactose in blood. Undigested…

Q: A woman knows that her mother is a carrier of Kartagener’s syndrome (an autosomal recessive…

A:

Q: A form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal…

A: 50 percent chances.

Q: PKU is an inherited disease caused by a recessive allele. If a woman and her husband, who are both…

A: Alleles are the alternative forms of a gene that are located on the same locus of a homologous…

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A: Genes carry the traits from one generation to another. Genes that code for different forms of a…

Q: Javid has two brothers. He looks a lot like one of them but not at all like the other one. All three…

A:

Q: A woman with achondroplasia (a dominant form of dwarfism) anda phenotypically unaffected man have…

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Q: John Legend and Chrissy Teigen are looking to have another child. However, they’re wondering how…

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Q: Assume no Bombay allele for this entire question.) Consider a cross between someone with blood type…

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Q: Based on the observed inheritance pattern and ratio of phenotypes, what are the genotypes of the…

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Q: A boy with cystic fibrosis (a recessive disorder) is born to a couple who appear to be normal. What…

A: Cystic fibrosis is a hereditary, life-threatening disease that affects the lungs and digestive…

Q: In a parental cross for an autosomal MOI, the ratio (Disease phenotype):(WT phenotype) differ for…

A: The alleles are the alternative forms of a gene that are located in on the same locus of a…

Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.