Sexual

sexual dimorphism two forms or types of a plant or animal because of its sex Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...

Sexual selection is the theory that competition for mates between individuals of the same sex results in differential mating and reproduction. This mechanism can drive the evolution of certain traits and can lead to the amplification of those traits.

Asexual reproduction is the formation of new individuals from the cell(s) of a single parent.

Sexual selection is the theory proposed by Charles Darwin that states that the frequency of traits can increase or decrease depending on the attractiveness of the bearer.

Sexual intercourse --> coitus (Science: biology, gynaecology) sexual connection per vaginam between male and female. Origin: L. Coitio = a coming together, meeting ...

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Sexually transmitted diseases Acquired Immunodeficiency Syndrome(AIDS) — Caused by HIV Herpes Syphilis Gonorrhea Genital warts ...

The sex-associated phenotype of somatic tissues in sexually dimorphic animals. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...

Sexual reproduction requires two parents and thus promotes genetic variation.

Sexual reproduction occurs only in eukaryotes. During the formation of gametes, the number of chromosomes is reduced by half, and returned to the full amount when the two gametes fuse during fertilization.

Sexual PCR PCR amplification in which similar, but not identical, DNA sequences are reassembled to obtain novel combinations of related, but variable sequences.

sexual reproduction -- A type of reproduction in which two parents give rise to offspring that have unique combinations of genes inherited through the gametes of the two parents. Sexual reproduction involves meiosis and syngamy.

Sexual selection by a mate, fertility, and the production of sufficient progeny to replace the parents are other adaptive traits necessary for the survival of a population. Attraction to and by a mate is essential and quite varied among species.

sexual dimorphism (dy-mor-fiz-um) A special case of polymorphism based on the distinction between the secondary sex characteristics of males and females. sexual reproduction ...

sexual reproduction The process where two cells (gametes) fuse to form one fertilized cell or zygote. cf asexual reproduction; gamete; hybrid.

Sexual selection 2 In this post I present two models of sexual selection and a paper that tests one of the predictions of both models.

sexual reproduction Reproduction involving fusion of gametes. sexual selection Selection in relation to mating.

Sexual orientation is an independent parameter from gender identity. Those are two different things.

Asexual Reproduction Sexual Reproduction Sexual Reproduction: Fertilization Sex Chromosome Abnormalities ...

Asexual reproduction. Reproduction of the individual without the production of gametes and zygotes Assimilation efficiency. The fraction of ingested food that is absorbed and used in metabolism ...

Asexual reproduction: Any form of reproduction not depending on a sexual process. It involves a single individual. Reproduction by cell division, fragmentation or budding.

copulatio - sexual coupling] The sexual act of a male and female, of the same species, coming together for the purpose of delivering and receiving sperm respectively.

The panel on human sexuality focused largely on press coverage of a possible genetic basis for homosexuality.

Animal - kingdom composed of multicellular organisms divided into two divisions: vertebrates and invertebrates, who obtain their food from external sources and reproduce sexually or asexually ...

Well, this is a really important part of human biology and the biology of many other organisms that go through sexual reproduction. Basically, here's the problem: You've got a certain number of chromosomes; we humans have 46.

Continuation of species or breed, sexually or through cell rupture, cell division, budding, spore formation, conjugation or parthenogenesis. Related Terms: Species ...

A cross made to transfer alleles between two sexually isolated species by first transferring the alleles to an intermediate species that is sexually compatible with both. Related Terms: Crossing ...

Conjugation a type of sexual reproduction in which the contents of the male gamete cell go over into and unite with the female cell (con = with‚ together; juga = a yoke; -tion = process of‚ action of) ...

ascospores. A spore produced within the saclike cell of the sexual state of a fungus. auricle. A small earlike projection from the base of a leaf or petal. available water. The amount of water held in the soil that can be extracted by plants.

An infectious disease caused by the spirochete bacterium Treponema pallidum, mostly sexually transmitted and characterised by genital sores, skin rash, fever, and swollen lymph nodes.

amplexus - [Latin, an embracing] form of sexual reproduction seen in frogs wherein the male grasps the female from behind and externally fertilizes the eggs as they are deposited.

Klinefelter syndrome -- an endocrine condition caused by a an extra X-chromosome (47,XXY); characterized by the lack of normal sexual development and testosterone, leading to infertility and adjustment problems if not detected and treated early.

See also: Organ, Trans, Human, Species, Animal