selection in which some individuals out-reproduce others of a population because they are better at securing mates for sexual reproduction.[failed verification]...

There are two forms of reproduction: asexual and sexual. In asexual reproduction, an organism can reproduce without the involvement of another organism. Asexual...

Animal sexual behaviour takes many different forms, including within the same species. Common mating or reproductively motivated systems include monogamy...

to the evolution and maintenance of sexual reproduction? More unsolved problems in biology Sexually reproducing animals, plants, fungi and protists are...

alternative to sexual reproduction in times when reproductive opportunities are limited. Some monitor lizards, including Komodo dragons, can reproduce asexually...

the evolutionary explanation for heterosexuality in organisms that reproduce sexually is straightforwardly understood to be a psychological adaptation resulting...

biological trait that determines whether a sexually reproducing organism produces male or female gametes. During sexual reproduction, a male and a female gamete...

Sexual intercourse (also coitus or copulation) is a sexual activity typically involving the insertion of the erect male penis inside the female vagina...

Plants may reproduce sexually or asexually . Sexual reproduction produces offspring by the fusion of gametes, resulting in offspring genetically different...

organism cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually. Most...

Sexual attraction is attraction on the basis of sexual desire or the quality of arousing such interest. Sexual attractiveness or sex appeal is an individual's...

while most mammals copulate vaginally, and many basal vertebrates reproduce sexually with external fertilization. Spiders are often confused with insects...

Sexual maturity is the capability of an organism to reproduce. In humans, it is related to both puberty and adulthood. Puberty is the biological process...

(also abbreviated as CP, also called child porn or kiddie porn, and child sexual abuse material, known by the acronym CSAM, (underscoring that children can...

with another haploid cell during fertilization in organisms that reproduce sexually. Gametes are an organism's reproductive cells, also referred to as...

Sexual dimorphism is the condition where sexes of the same species exhibit different morphological characteristics, including characteristics not directly...

reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is...

principle apply to any sexually reproducing organism, such as plants and fungi. There is some evidence for sexual conflict in plants. Sexual conflict takes two...

directly into English. The concept is that both partners can experience sexual stimulation and oral sensation simultaneously, but this can also distract...

whether a sexually reproducing organism produces male or female gametes. Sex, SEX or sexual may also refer to: Sexual intercourse, a sexual activity Sex...

purposes of sexual reproduction. Fertilization is the fusion of two gametes. Copulation is the union of the sex organs of two sexually reproducing animals...

stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just...

cell is any cell that gives rise to the gametes of an organism that reproduces sexually. In many animals, the germ cells originate in the primitive streak...

filamentous fungi composed of hyphae (except for basidiomycota-yeast) and reproduce sexually via the formation of specialized club-shaped end cells called basidia...

mechanisms that enable them to perform sexual acts and to reproduce. Men and women react similarly to sexual stimuli with minor differences. Women have...

A sexual fantasy, or erotic fantasy, is an autoerotic mental image or pattern of thought that stirs a person's sexuality and can create or enhance sexual...

cell thick. Cnidarians are also some of the few animals that can reproduce both sexually and asexually. Cnidarians mostly have two basic body forms: swimming...

a female cannot reproduce sexually without access to the gametes of a male, and vice versa, but in some species females can reproduce by themselves asexually...

material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic...

banana after it was devastated by Panama disease. They are unable to reproduce sexually, instead being propagated via identical clones. Due to this, the genetic...