In Drosophila, the allele red eyes (b) is dominant to the allele for brown eyes (bw). At another gene locus on the same chromosome, the allele for thin wing veins (hv ) is dominant to the allele for heavy wing veins (hv). Flies homozygous for bw and hv are crossed to flies homozygous for bw and hv to obtain doubly heterozygous F1 progeny. What would be the results of a test cross with the F1 flies?

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen