Martin is concerned about his future children inheriting the disease. Answer the following questions regarding inheritance patterns (you might like to use punnet squares to help you prepare your response, but they don’t need to be included in your answer). A mother is a carrier for an X-linked disease, what percentage of males will manifest the disease? And what percentage of females will manifest the disease? answer: The male offspring of the mother will have 50% of manifesting the disease, and there will be none for the female offspring. However, the female offspring will be the carriers of the disease with 50%. is the statement correct?
Question
Martin is concerned about his future children inheriting the disease. Answer the following questions regarding inheritance patterns (you might like to use punnet squares to help you prepare your response, but they don’t need to be included in your answer). A mother is a carrier for an X-linked disease, what percentage of males will manifest the disease? And what percentage of females will manifest the disease? answer: The male offspring of the mother will have 50% of manifesting the disease, and there will be none for the female offspring. However, the female offspring will be the carriers of the disease with 50%. is the statement correct?
Solution
Yes, the statement is correct. If a mother is a carrier for an X-linked disease, she has one affected X chromosome and one normal X chromosome. When she has children, she will pass on one of her X chromosomes to each child.
For her male children, they will receive her affected X chromosome 50% of the time, and her normal X chromosome 50% of the time. Since males only have one X chromosome, if they receive the affected X chromosome, they will manifest the disease. So, 50% of her male children will manifest the disease.
For her female children, they will also receive her affected X chromosome 50% of the time, and her normal X chromosome 50% of the time. However, females have two X chromosomes, one from each parent. So, even if they receive the affected X chromosome from their mother, they will still have a normal X chromosome from their father. This means they will be carriers of the disease, but will not manifest it. So, 50% of her female children will be carriers of the disease, but none will manifest it.
Similar Questions
is this statement correct c) The male offspring of the mother will have 50% will manifest the disease, and the female offspring will be the carriers of the disease with 50%.
Martin, a 25-year-old male, has recently been diagnosed with a mitochondrial disease and is seeking information. You know that mitochondrial disease is a genetic disease caused by a mutation in one of the 22 autosomal chromosomes leading to a reduced function of the mitochondria. Question 11. Martin asks if his exhaustion is associated with his disease – knowing the function of the mitochondria, what would you say to Martin (in lay terms)? (2 marks) Question 12. Martin is concerned about his future children inheriting the disease. Answer the following questions regarding inheritance patterns (you might like to use punnet squares to help you prepare your response, but they don’t need to be included in your answer). (6 marks) a) If both parents are carriers (heterozygous) for a recessively inherited gene, what percentage of offspring will manifest the disease? b) If only one parent contains a single copy (heterozygous) of a dominantly inherited disorder and the other parent is homozygous recessive, what percentage of offspring will have the disorder? c) A mother is a carrier for an X-linked disease, what percentage of males will manifest the disease? And what percentage of females will manifest the disease? d) Explain why there is a difference in X-linked inheritance patterns.
Fabry disease in humans is a X-linked disease. The probability (in percentage) fora phenotypically normal father and a carrier mother to have a son with Fabrydisease is ____________.
Consider a cross between a man with an X-linked recessive disorder and a woman who is a carrier for the disorder. Approximately what percentage of their children are predicted to express the disorder?
If a mother has one dominant allele for a disease on her X chromosome, what is the likelihood her sons and daughters will inherit the disease?
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