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The inscription mentions the name Ulfr ("wolf"), and the name Kleppir/Glippir. The last name is not fully understood, but may have represented Glæipiʀ which is similar to Gleipnir which was the rope with which the Fenrir wolf was bound. The two male names may have inspired the theme depicted on the runestone.
Sexual dimorphism was also described in the gene level and shown to extend from the sex chromosomes. Overall, about 6500 genes have been found to have sex-differential expression in at least one tissue. Many of these genes are not directly associated with reproduction, but rather linked to more general biological features.
While, as seen before, most organisms which portray sexual mimicry are born with this morphology/behaviour, this is not always the case. The giant cuttlefish, Sepia apama, mentioned above in the section “sneaky copulations”, is born with the capacity to choose whether to change its morphology to look like a female or a mature male. When no ...
For these animals, there is documented evidence of homosexual behavior of one or more of the following kinds: sex, courtship, affection, pair bonding, or parenting, as noted in researcher and author Bruce Bagemihl's 1999 book Biological Exuberance: Animal Homosexuality and Natural Diversity.
The size-advantage model states that individuals of a given sex reproduce more effectively if they are a certain size or age. To create selection for sequential hermaphroditism, small individuals must have higher reproductive fitness as one sex and larger individuals must have higher reproductive fitness as the opposite sex.
Since 1973, the gray wolf has been on and off the federal government's endangered species list. When the wolves are on the list, advocates say the protections help wolves' place in the natural ...
Extant primates exhibit a broad range of variation in sexual size dimorphism (SSD), or sexual divergence in body size. [4] It ranges from species such as gibbons and strepsirrhines (including Madagascar's lemurs) in which males and females have almost the same body sizes to species such as chimpanzees and bonobos in which males' body sizes are larger than females' body sizes.
Bak (Assamese aqueous creature); Bakeneko and Nekomata (cat); Boto Encantado (river dolphin); Itachi (weasel or marten); Jorōgumo and Tsuchigumo (spider); Kitsune, Huli Jing, hồ ly tinh and Kumiho (fox)