Duchenne muscular dystrophy is a genetic disorder that arises from a recessive x-linked allele. why is this disorder almost always restricted to males?

What does it mean for a cell membrane to be selectively permable

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere