The codon AUG codes for: MCQ with Answer and Explanation

Explanation:
PKU leads to accumulation of phenylalanine, causing mental retardation. Albinism is tyrosinase defect, MSUD branched-chain ketoacid dehydrogenase, homocystinuria methionine metabolism.

Explanation:
Cross-pollination between different plants promotes genetic diversity. Self-pollination does not need external agents; entomophily is by insects, hydrophily by water, anemophily by wind.

Explanation:
Rhizobium is a symbiotic nitrogen-fixing bacterium that forms root nodules in the roots of leguminous plants (like peas, beans, clover). Inside these nodules, the bacterium converts atmospheric nitrogen (N2) into ammonia (NH3), which the plant can use. In return, the plant provides the bacteria with carbohydrates and a protected environment. It significantly reduces the need for chemical nitrogen fertilizers.