Month: September 2022

ACCUMULATION OF REPETITIVE DNA. "The Y or W sex chromosomes often accumulate various repetitive DNA as has been proven for humans, drosophila, fish, and reptiles." https://lnkd.in/gdTbmHn View in LinkedIn

HERMAPHRODITE PLANTS. "The great majority of flowering plants (around 90%) produce flowers which are `perfect'; these hermaphroditic flowers are both staminate (with stamens) and pistillate (with one or more carpels)." https://lnkd.in/gb3zS32 View in LinkedIn

SEPARATE SEXES. "Ten percent or so of plant species have evolved floral unisexuality as spatial separation of their flowers. This can be manifested as monoecy, where the male and female organs are carried on separate flowers on the same plant, or dioecy, where male and female flowers are carried on separate male (staminate) or female (pistillate) individuals." https://lnkd.in/gb3zS32 View in LinkedIn

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PLANT REPRODUCTION. "A number of other sex states or breeding systems are found, which may be intermediates during the evolution of full unisexuality or may be stable forms." These include: gynodioecy, androdioecy, trioecy or subdioecy, gynomonoecy, andromonoecy, and trimonoecy. https://lnkd.in/gb3zS32 View in LinkedIn

"DIOECY (Greek: διοικία "two households"; adjective form: dioecious) is a characteristic of a species, meaning that it has distinct male and female individual organisms or colonies, meaning that a colony contains only either male or female individuals. Dioecious reproduction is biparental reproduction" as opposed to hermaphrodite reproduction." https://lnkd.in/gJcDDvC View in LinkedIn

"MOST PLANTS have bisexual flowers with functional male and female flowers. Some are self sterile, requiring pollination from another plant to produce seed." https://lnkd.in/g9GqmRH View in LinkedIn

"DIOECIOUS PLANTS have male (staminate) flowers on one plant, and female (pistillate) flowers on another plant. Some of these plants are polygamo-dioecious, with some male flowers on female plants and some female flowers on male plants." https://lnkd.in/g9GqmRH View in LinkedIn

BARRIER TO SELF-POLLINATION. "Dioecy prevents intra-individual self-pollination absolutely, while monoecy merely prevents intra-flower self-pollination but not intra-individual self-pollination." https://lnkd.in/gb3zS32 View in LinkedIn

BIOLOGICAL TABOO. "In terms of the driving force, it is tempting to consider dioecy as simply the most extreme mechanism which avoids the deleterious effects of inbreeding." https://lnkd.in/gb3zS32 View in LinkedIn