Establishing the father relationship of a man and a child.
Sexual activities of animals.
In animals, the social relationship established between a male and female for reproduction. It may include raising of young.
Eating other individuals of one's own species.
The total process by which organisms produce offspring. (Stedman, 25th ed)
The behavior patterns associated with or characteristic of a father.
A variety of simple repeat sequences that are distributed throughout the GENOME. They are characterized by a short repeat unit of 2-8 basepairs that is repeated up to 100 times. They are also known as short tandem repeats (STRs).
Sexual union of a male and a female in non-human species.
The selection or choice of sexual partner in animals. Often this reproductive preference is based on traits in the potential mate, such as coloration, size, or behavioral boldness. If the chosen ones are genetically different from the rejected ones, then NATURAL SELECTION is occurring.
The direct struggle between individuals for environmental necessities or for a common goal.
Social structure of a group as it relates to the relative social rank of dominance status of its members. (APA, Thesaurus of Psychological Index Terms, 8th ed.)
Male parents, human or animal.
The fusion of a spermatozoon (SPERMATOZOA) with an OVUM thus resulting in the formation of a ZYGOTE.
The transfer of POLLEN grains (male gametes) to the plant ovule (female gamete).
A widely distributed order of perching BIRDS, including more than half of all bird species.
Animal behavior associated with the nest; includes construction, effects of size and material; behavior of the adult during the nesting period and the effect of the nest on the behavior of the young.
The fertilizing element of plants that contains the male GAMETOPHYTES.