Gonorrhea is one of the easier STDs to prevent because the bacterium that causes the infection can survive only under certain conditions. The use of condoms protects against gonorrhea infection. Since the organism can live in the throat, condoms should be used during oral-genital contact as well...
The production of new offspring that involves both female and male parts of the same or different organisms is called sexual reproduction. It is also called germinal reproduction, in which organisms originate from the parents' germinal cells. Sexual reproduction is usually found in more complex ...
Another hypothesis is the Fisherian arbitrary choice hypothesis, which states the female choice is completely arbitrary. When does intrasexual competition occur? Intrasexual competition occurs in species when members of the same sex complete for access to potential mates. It occurs when members of ...
In most organisms, the male gamete is motile and the female gamete is non-motile. The male gametes are produced in large numbers because many male gametes fail to reach female gametes. In flowering plants through the process of pollination, male gametes reach the female gametes. Fertilisation In...
the parent. This can happen when the parent's cells divide through the process of fission, when offspring form attached to the parent through budding or when a section of the parent is separated from the parent and then grows the missing part or parts to become a whole separate organism. ...
Sex determination, in biology, is a system which decides the sexual characteristics of an organism or offspring. It helps to determine whether the organism will be male or a female, which are the two most common sexes. The widely used technique is chromosomal sex determination, in which sex ...
Male sex cells are commonly known as sperm cells, or spermatozoa, and female gametes are known as eggs or ova. When they fuse together, fertilization occurs and a zygote is formed. Spermatozoa Spermatozoa and ova are structurally very different from one another. Spermatozoa are smaller, being...
External fertilization occurs mostly inaquatic environmentsand requires both a male and female organism to release or broadcast gametes into their surroundings (usually water). This process is calledspawning.Amphibians, fish, and coral reproduce by external fertilization. External fertilization is advantageou...
Antibiosis is the type of amensalism where the interaction between the organisms is harmful and even detrimental to at least one of the organisms. Hence the roots of the word - anti- and bio, meaning "life." This interaction is most commonly antagonism, in which one organism releases a ch...
the process of reproduction, it is classified into two types. The reproduction of offspring by a single organism with or without gamete formation, is called as asexual reproduction. The reproduction of offspring by two organisms with fusion of male and female gamete is known as sexual reproduction...