The technique used to amplify small quantities of DNA in vitro is: MCQ with Answer and Explanation

Explanation:
Bile is produced by the liver and stored in the gall bladder. The gall bladder does not produce bile. All other statements are correct.

Explanation:
The corpus luteum, formed after ovulation, secretes progesterone (and some estrogen) to maintain the uterine lining for pregnancy. If no fertilization, it degenerates, causing menstruation. Estrogen is also produced by growing follicles, testosterone by Leydig cells, prolactin by anterior pituitary.

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.