Knight — 8 — Dictionary 



Androecium. — The stamens collectively. 



Androgenesis. — Male parthenogenesis; development from a 



fertilized egg followed by disintegration of the maternal nucleus 



so that the resulting individual possesses only paternal chromo- 

 somes and is typically haploid. 

 Androgenetic. — Of an individual whose cells contain only 



chromosomes of paternal origin. 

 Androgenic. — Stimulating the growth or production of male 



characteristics. 

 Androgens. — A group of hormonic substances which can 



induce the development of the secondary sexual characters in 



a male. The following are included in this group : Testosterone, 



- propionate, - acetate, - dipropionate, and methyl testosterone. 

 Androgynary. — Having flowers whose stamens and pistils 



are petaloid. 

 Androgyne. — Hermaphrodite. 

 Androgynism. — Bisexuality ; hermaphroditism ; possessing 



both stamens and pistils. 

 Androhermaphrodite. — A plant in whose flowers the male 



organs are developed more strongly than the female; towards 



the close of the flowering season such a plant may show only 



male characteristics. 

 Andromonoecious. — Having both perfect and staminate 



flowers on the one plant but no pistillate flowers. 

 Andropetalous. — "Double" flowered; with petaloid stamens 



but pistil unchanged. 

 Androsomes. — Chromosomes which occur only in nuclei of 



the male germ-line, never in somatic nuceli of either sex and 



never in the nuclei of the female germ line; male-limited 



chromosomes. 

 Androstenediol. — An androgenic substance which also has 



oestrogenic effects. 

 Androstenedione. — One of the androgens, said to be more 



effective than testosterone in maintaining the seminiferous 



function of the testes. 

 Androsterone. — A katabolic product of testosterone which is 



excreted in the urine and which has androgenic properties. 

 Anemophilous. — Pollinated by wind-borne pollen. 

 Anemophily. — Wind-pollination. 

 Aneucentric Translocation. — A translocation involving the 



centromere so that an acentric chromosome and a dicentric 



chromosome result. 



