The scientist who proposed the 'germ theory of disease' was: MCQ with Answer and Explanation

Explanation:
Humulin is the trade name for the first genetically engineered human insulin, approved by the FDA in 1982. Prior to this, insulin for diabetic patients was extracted from the pancreases of pigs and cows, which could cause allergic reactions. Humulin is produced by inserting the human insulin genes into Escherichia coli bacteria, which then synthesize the exact amino acid sequence of human insulin, eliminating the risk of animal-derived immune reactions.

Explanation:
COVID-19 (coronavirus disease 2019) is caused by the novel coronavirus SARS-CoV-2. MERS is caused by MERS-CoV, SARS by SARS-CoV. Influenza is caused by influenza viruses.

Explanation:
Incomplete dominance occurs when neither allele is completely dominant, resulting in a heterozygous phenotype that is a blend (e.g., red × white snapdragons produce pink). Codominance shows both alleles fully expressed (e.g., AB blood type). Complete dominance shows one allele masking another. Polygenic inheritance involves multiple genes contributing to a continuous trait.