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ashlynn143

If only a mother has achondroplasia, what are the chances a child will also have the condition?

  • one year ago
  • one year ago

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  1. ashlynn143
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    please

    • one year ago
  2. KarolinaJosephine
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    it's 50% because only the mother has it

    • one year ago
  3. ashlynn143
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    thank you for helping me the second time today!?!?!

    • one year ago
  4. InYourHead
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    I think I got it. Achondroplasia is gene defect, and a cause of dwarfism. People with this disorder have one mutant copy of the FGFR3 gene that causes the disorder, and one normal copy of the FGFR3 gene. If the parent passes on their mutant copy to their child, then the child will have achondroplasia. KarolinaJosephine is right. It is 50%, if only the mother has it. Let me draw a table, and show you. |dw:1352597562365:dw| The mother's genes are A and a. The father's genes are B and b. Let's look at the table, and pretend that A is the mutant gene. A is the gene that would give the child achondroplasia. There are 4 squares on the table, and 2 squares have A. That means there's a 50% chance the child will have achondroplasia, you see?

    • one year ago
  5. ashlynn143
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    yah thanks but i got my answer already thank you though

    • one year ago
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