thatsme
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In a genetic counseling session, a healthy couple has revealed that they are first cousins and that they are concerned about health risks for their offsprings, which of the following best characterizes these risks?
A- Because the couple shares approximately half of their genes, most of the offsprings are likely to be affected with some type of genetic disorder
B-The couple has an increased risk of producing a child with an autosomal dominant disease
C-The couple has an increased risk of producing a child with an autosomal recessive disease
D-The child has an increased risk of producing a child with Down syndrome
E-There is no known increase in risk for the offspring
EXPLAIN ANSWER
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| robin082006
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C?
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| robin082006
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First cousins share 1/8 of their genes and therefore increase the risk of autosomal recessive diseases.
Edited by robin082006 on 03/16/06 - 11:10 PM
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| ralux
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dont first cousins share 1/4 of their genes?
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| robin082006
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1/8
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| doc179
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C
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| mjl1717
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good to the point q thatsme!-
my q is what % of genes would a brother and sister share?
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| r_albayunen
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C
its 1/2 brothers , 1/4 uncles/nieces , 1/8 first cousins
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