BIOL 1111 Lecture Notes - Lecture 14: Cytosine, Guanine, Radiography
23 Apr 2018
School
Department
Course
Professor
Document Summary
Cut algal cells into pieces - acetabularia. Cut off cap - new cap grew. Cut off stalk and cap - new ones grew. Cut off food - no new foot. Two species of acetabularia (a and b) Grafted that stalk of b onto the foot of a. The cap that grew was the type belonging to a. Tested hammerling"s theory that nucleus contained heredity info. Removed nucleus from frog egg - did not develop. Injected dead s cells into mice - no effect. Injected dead s and live r - died. Blood had high levels of live s cells with r membrane characteristics. Information from dead s cells transferred to r cells. Properties of transforming principle similar to dna. Supported avery"s view that dna was the hereditary material. Uses bacterial dna replication system - thousands of new viruses. Agitated to remove protein coats from surface. 32 p remained and was in all viruses created in bacteria.
