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.

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

Speed is the ratio of the distance of an object moves to

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies