Editing 1905 in science (section)

==Biology==
* April 18 – [[William Bateson]] coins the term "[[genetics]]" in a letter to Adam Sedgwick.
* June 20 – Dr. [[Ernest Henry Starling]] introduces the word "[[hormone]]" into the English language.<ref>{{cite book|first=Abel|last=Lajtha|title=Handbook of Neurochemistry '''8''': Neurochemical Systems|publisher=Springer|year=2013|page=x}}</ref> 
* [[Reginald Punnett]]'s ''Mendelism'' is published in Cambridge (U.K.), probably the first [[popular science]] book on genetics.
* [[Frederick Blackman]] proposes his law of limiting factors in relation to [[photosynthesis]].<ref>{{Cite journal |last=Blackman |first=F.F. |date=1905 |title=Optima and Limiting Factors |url=https://www.biodiversitylibrary.org/item/233541 |journal=[[Annals of Botany]] |location=London |publisher=Academic Press |volume=19}}</ref>
* [[Nettie Stevens]] and [[Edmund Beecher Wilson]] independently describe the [[XY sex-determination system]].
* [[Stamen Grigorov]] identifies the [[bacterium]] ''[[Lactobacillus bulgaricus]]'', a major agent in the creation of [[yogurt]].
* [[Maltese people|Maltese]] doctor and archaeologist [[Themistocles Zammit]] identifies [[Pasteurization|unpasteurized]] milk as the major source of the pathogen causing [[Brucellosis]].
* [[National Audubon Society|National Association of Audubon Societies for the Protection of Wild Birds and Animals]] established in the United States.