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17 Cards in this Set
- Front
- Back
What are the chances that a woman who is color blind will have a son who is color blind? |
100 percent |
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The gene responsible for Marfan syndrome encodes a protein associated with? |
connective tissue |
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Color blindness only occurs in males
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False, not just men |
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The main problem for sufferers of cystic fibrosis is? |
mucus blocking ducts of glands, the inability to transport chloride ions.
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Variation in expressivity and penetrance of genes is due to the effects of other genes and the environment.
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True, it can have variety. |
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Amal has a serious metabolic disorder known as PKU. His sister has the same disorder. Neither of Amal’s parents have the disorder. What is the most likely inheritance pattern of this disorder? |
Autosomal recessive |
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The phenotypes of a trait controlled by the same gene are not always identical. |
True, not always the same. |
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A child is born with a lethal dominant allele. This would seem to be impossible since either parent, had they possessed this allele, would have suffered its lethal effects. What is a possible explanation? |
All of these are possible |
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Duchenne muscular dystrophy and Becker's muscular dystrophy represent allelic forms of the same X linked gene. |
True |
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Dystrophin is a protein that normally |
strengthens the attachment between muscle proteins and the plasma membrane. |
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Autosomal dominant traits are inherited from affected parents. |
truth, dominant trait. |
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More than one mode of inheritance can be seen for a single trait
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truth, multiple modes of inheritance. |
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The analysis of a pedigree is complete when the information in the pedigree supports the hypothesis formed by the geneticist.
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false, the information doesn't support |
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Mendel's laws apply to all sexually reproducing organisms. Therefore, the basic methods of genetic analysis in humans and other organisms is the same.
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false |
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Valeria has a serious disorder called fragile X syndrome and her brother does not have the disorder. Her mother does not have the disorder but her father does. What is the most likely inheritance pattern for fragile X syndrome?
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X linked dominant |
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Two phenotypically normal parents have six children. Two daughters and two sons have the same genetic disease. This would be the expected situation for |
cystic fibrosis |
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Which of the following is a goal of pedigree analysis?
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To determine dominance and recessive patterns and if a gene is sex linked or autosomal. |