Mendel's Law of Segregation states that: MCQ with Answer and Explanation

Explanation:
Carolus Linnaeus, a Swedish botanist, is known as the father of taxonomy for formalizing the modern system of naming organisms (binomial nomenclature) and classification. Louis Pasteur, a French chemist, is considered the father of microbiology for his groundbreaking work on vaccination, microbial fermentation, and pasteurization. Gregor Mendel, an Austrian monk, is universally recognized as the father of genetics for his pioneering experiments on inheritance in pea plants. All statements are correct.

Explanation:
The BBB restricts entry of pathogens and large molecules, maintaining brain homeostasis. Tight junctions between capillary endothelial cells are the structural basis. R explains A.

Explanation:
The Operon model, specifically the lac operon model, was proposed by French scientists François Jacob and Jacques Monod in 1961 to explain the regulation of gene expression in prokaryotes (bacteria). They proposed that genes are organized into functional units called operons, consisting of a promoter, an operator, and structural genes, controlled by a regulatory gene. They were awarded the Nobel Prize in Physiology or Medicine in 1965 for this discovery. Beadle and Tatum proposed the 'one gene-one enzyme' hypothesis.