Two parents are each heterozygous for both sickle cell anemia and cystic fibrosis. Each condition is determined by a recessive allele of a single gene. The two genes are independent. What is the probability of a child of theirs having either sickle-cell anemia or cystic fibrosis, but not both? Show all calculations you use to reach your answer.

The deserts of the sahara and australia are associated with

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

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.