Not all species share a common sex-determination system. In most animals, including humans, sex is determined genetically, but in some species it can be determined due to social, environmental or other factors. For example, Cymothoa exigua changes sex depending on the number of females present in the vicinity.
The existence of two sexes seems to have been selected independently across different evolutionary lineages (see convergent evolution). The repeated pattern is sexual reproduction in isogamous species with two or more mating types with gametes of identical form and behavior (but different at the molecular level) to anisogamous species with gametes of male and female types to oogamous species in which the female gamete is very much larger than the male and has no ability to move. There is a good argument that this pattern was driven by the physical constraints on the mechanisms by which two gametes get together as required for sexual reproduction.
Plant reproductive morphology is concerned with the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction.
Among all living organisms, flowers, which are the reproductive structures of angiosperms, are the most varied physically and show a correspondingly great diversity in methods of reproduction. Plants that are not flowering plants (green algae, mosses, liverworts, hornworts, ferns and gymnosperms such as conifers) also have complex interplays between morphological adaptation and environmental factors in their sexual reproduction. The breeding system, or how the sperm from one plant fertilizes the ovum of another, depends on the reproductive morphology, and is the single most important determinant of the genetic structure of nonclonal plant populations. Christian Konrad Sprengel (1793) studied the reproduction of flowering plants and for the first time it was understood that the pollination process involved both biotic and abiotic interactions. Charles Darwin's theories of natural selection utilized this work to build his theory of evolution, which includes analysis of the coevolution of flowers and their insectpollinators.
Chennai... A statement said, a new hostel constructed by SIPCOT in an area of 41,082sqft to accommodate 400 male workers was inaugurated in Tirupur ... Ltd ... Chennai ... A statement said, a new hostel constructed by SIPCOT in an area of 41,082sqft to accommodate 400 male workers was inaugurated in Tirupur ... Ltd ... Start a Conversation. .
... I don’t know what it is.“And then half the accommodation won’t accept males, it says females preferred.“It destroys your mental health because you literally don’t know from week to week where you’re going to live.
These all require quality well-designed user experience-informed interfaces to function well and benefit students ... The report also found that female students use learning resources more than male students, yet twice as many male students use non-learning digital services such as a way to manage accommodation and health and wellbeing support ... ....
In this view, female athletes need to “take one for the team” (i.e., the social-justice team) as it were, and accommodate female-identified biological males so that they can flourish as their “true selves.” As noted above, this was more or less my line ...
... and the commissioning of a completed accommodation complex for the young soldiers at 154 Armoured Regiment ... The facility will accommodate over 200 soldiers ... This will help to accommodate over 220 young soldiers both male and female and this is a great relief to the regiment.
Pictures have emerged showing the Campsfield House detention centre which could be set to reopen. Published by a press agency, the images show the disused immigration facility in Kidlington, Oxfordshire... The re-opened facility, which could accommodate up to 400 male detainees, is not expected to open until at least late 2023 ... More on this story ... .
They added ...The new facility, which could accommodate up to 400 male detainees, is not expected to open until at least late 2023 ... He added. "Opening a new immigration removal centre, as part of the New Plan for Immigration, will help ensure there is sufficient detention capacity to safely accommodate individuals ahead of removal." ... Features ... .
“If you are a female actress it has to be a female doubling unless it is something very, very specific and dangerous.”Female stunt doubles often face complications that their male counterparts don’t have to — namely cumbersome costumes.
... the Department of Housing.Chief Executive of the homeless charity Depaul, David Carroll, said the charity’s emergency accommodation services are “facing significant demands” and “more and more” young women and men being referred.
The facility being operated by the Department of Health (DOH) can accommodate 400 male and 80 female patients from South and Central Luzon, who have high-risk drug dependence and are willing to undergo treatment and rehabilitation in an in-patient facility.
It also included the separate use of male or female toilet facilities or single cubicles, separate male and female accommodation, wearing male and female uniforms and associated uniform policies and regulations, and male and female sports teams.
Ryan Watson, an attorney representing MichaelHouse, another operation seeking accommodations for houses at 5203 Walker Ave ... "I do not believe it's reasonable to accommodate 14 adult males in a house with five bedrooms and two bathrooms," said Heather Westra.
Male-dominated camps ... and remain largely male-dominated, with workers living in camp-style accommodation ... sites and in other companies.The mining and resources industry must establish acceptable standards for accommodation facilities, including security and other safety measures.
Thousands of workers are flown in each season and housed in village camp-style accommodation. Critics have long raised concerns about the hard-drinking, male-dominated culture that has been allowed to flourish at these sites.