For sickle-cell disease, assume s is the dominant allele and s is the recessive allele. which genotype are possible for offspring of a carrier (ss) and a person who lacks the sickle-cell is allele (ss)?

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.

What are the four stages of cell signaling?