What is an allergen?
A chemical substance released by the immune system in allergic reactions that is responsible for many of the symptoms of anaphylaxis, such as vasodilation
A poison or harmful substance
A raised, swollen, well-defined area on the skin resulting from an insect bite or allergic reaction
A substance that causes an allergic reaction

Complete the possible outcomes for each generation in the pedigree chartaa aa aa

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

3test questions with answers on incomplete dominance