Answer to Question #88921 in Genetics for Rachel
A normal male and a female who is heterozygous for the haemophilia mutation are expecting a child. What is the probability of this couple having a child with haemophilia? (Assume that all carrier females are asymptomatic.)
The probability is 25%.
There are 4 different genotypes possible in children: homozygous dominant girl, heterozygous girl, a boy with dominant allele that protects against the disease, and a boy with recessive allele. Only the last one will suffer from the disease.
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An experiment is investigating the effect of an enzyme on a substrate in a buffered solution. Which of the following is an example of an appropriate negative control condition?
A) Substrate and buffer
B) Substrate, buffer and a different enzyme