Androgeny

Definition

noun

Male parthenogenesis in which the embryo contains only paternal chromosomes


Supplement

Parthenogenesis is regarded as a form of asexual reproduction since a zygote forms without the union between female and male gametes. It often involves an egg cell giving rise to an embryo without inheriting genes from the paternal parent. A less common form is androgeny, which is a male parthenogenesis. It occurs when the egg nucleus is unable to participate in fertilization.1 The process or condition in which an organism develops while containing only paternal chromosomes is referred to as androgenesis or male apomixis. It occurs naturally but of rare occurrence. It is seen in certain insect, arthropod, and plant species. There is a fusion of the male and the female gametes but involves the replacement of the female nucleus by the male nucleus. Examples of species capable of male apomixis are Nicotiana and Crepis plant species. The plant species Supressus dupreziana reproduce regularly though by this means. There is an artificial way of producing offspring with only male inheritance. It is referred to as androclinesis. It involves culturing of haploid plants from the anther tissue or microspores.2


See also:


Reference(s):
1 androgeny. (n.d.) WordNet 3.0, Farlex clipart collection. (2003-2008). Retrieved from [[1]]
2 Solntzeva, M.P. (2003). "About some terms of apomixis: pseudogamy and androgenesis". Biologia. 58 (1): 1–7.

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