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Female in Biological Definition

Chromosome

... solely from either parent. When a male and a female gamete merge ( fertilization ), a new diploid ... Figure 3 : Karyogram of human female Karyotype To determine the (diploid) ... (X instead of XX or XY). In Turner syndrome, female sexual characteristics are present but ...

Drosophila

... of the family. Male (left) and female fruit flies. Drosophila is part of the ... Drosophila melanogaster egg "The female fruit fly lays batches of between 15 and 20 white eggs each day." (Burton) A female lays up to 2000 pearly white eggs, each with a ...

Hermaphrodite

... is a species that contains both male and female sexual organs at some point during their ... organism starts as a male, and changes sex to a female later in life. Example: The seabasses (Family ... causing a change in when the switch from male to female occurs, since fishermen naturally prefer to catch ...

Human

... . An egg is usually fertilized inside the female by the male through sexual intercourse , though ... The mean height of a North American adult female is 162 cm (64 in ) and the mean weight is 62 ... span at birth in Singapore is 84.29 years for a female and 78.96 years for a male, while in Botswana , ...

Infertility

... 1 Definition 2 Causes 2.1 female infertility 2.2 Male infertility 2.3 ... ten percent of the reproductive age population. female infertility accounts for one third of infertility ... infertility for another third, combined male and female infertility for another 15%, and the remainder of ...

Parthenogenesis

... though the populations are entirely female. One female plays the role of a male lizard and mounts the female that is about to produce eggs. The reason the ... estrogen are low, and others to take the role of female when estrogen levels are high. Lizards that act ...

Semen

... in pregnancy following vaginal sex with a female . Semen is a whitish , milky fluid, very ... the spermatozoa during their journey through the female reproductive tract. The normal enviroment of the ... involved in supressing an immune response by the female against the foreign semen. Semen and ...

Barr body

... diploidy of the X or Z, a Barr body is the inactive X chromosome in a female cell, or the inactive Z in a male. This happens early in embryonic ... regions the other will. This is what results in the coloration pattern of female calico cats ; pigmentation genes on the X chromosome are activated in ...

Cancer

... followed by the leukemias and the central nervous system cancers. female infants and male infants have essentially the same overall cancer ... component. Examples are: breast cancer and ovarian cancer in female carriers of BRCA1 tumors of various endocrine organs in multiple ...

Ploidy

... the other has diploid cells. Most commonly, the male is haploid and the female is diploid. In such species, the male develops from unfertilized eggs, while the female develops from fertilized eggs: the sperm provides a second set of ...

Ploidy

... the other has diploid cells. Most commonly, the male is haploid and the female is diploid. In such species, the male develops from unfertilized eggs, while the female develops from fertilized eggs: the sperm provides a second set of ...

Malaria

... 5 External links Mechanism of the disease Infected female Anopheles mosquitoes carry Plasmodium sporozoites in their salivary ... hemorrhagic complications of malaria. Some merozoites turn into male and female gametocytes . If a mosquito bites the infected person and picks up ...

Twin

... . Turner syndrome can occur in any birth (including singletons, fraternal female twins, or identical female twins), so an individual with Turner syndrome is not automatically a twin. ...

Anatomy

... an anatomy , or more precisely an amatory anatomy . It is a love sonnet dedicated to describing the parts of a lover 's anatomy, usually female . Anatomical drawing of the human muscles from the Encyclopdie . Anatomy (from the Greek anatome , from ana-temnein , to ...

Capacitation

... event; the sperm move normally and look mature prior to capacitation. In vivo this final step typically occurs after ejaculation , in the female reproductive tract . In vitro , capacitation can occur in sperm that have either undergone ejaculation or have been extracted from the ...

Carolus Linnaeus

... He originated the practice of using the ♂ - (shield and arrow) Mars and ♀ - (hand mirror) Venus glyphs as the symbol for male and female . Linnaeus was instrumental in the development of the Celsius (then called Centigrade ) temperature scale, inverting the scale that Anders ...

Cell growth

... of diploid organisms. It produces four special daughter cells ( gametes ) which have half the normal cellular amount of DNA. A male and a female gamete can then combine to produce a zygote , a cell which again has the normal amount of chromosomes. For details see the individual articles on ...

Computed axial tomography

... to cause imaging artifacts that limit evaluation of abdominal structures). CT has limited application in the evaluation of the pelvis . For the female pelvis in particular, ultrasound is the imaging modality of choice. Extremities CT is often used to image complex fractures , especially ...

Hardy-Weinberg principle

... is brought together with males and females with different allele frequencies, then the allele frequency of the male population follows that of the female population because each receives its X chromosome from its mother. The population converges on equilibrium, within about six generations maximum. ...

Homunculus

... things. In the Enix RPG, Valkyrie Profile, the alchemist Lezard Valeth experiments with homonculi. Among them are his minion Bellion, and numerous female elven-like forms kept in large glass tubes. Homonculus is a song by the indie/experimental band Xiu Xiu . It appears on their album Knife Play ...

Karyotype

... Karyogram of human female A karyotype is the complete set of all chromosomes of a cell of any living organism. The chromosomes are arranged and displayed (often on a ...

Klinefelter's syndrome

... testosterone treatment and other therapies. While the gender identity of people with XXY karyotype is usually male, the number of people with a female gender identity among them seems to be higher than could statistically be expected if those cases were indeed, as the current medical opinion ...

Lyon hypothesis

... a common way in which the cell silences particular genes. Certain animals have their coloring patters dictated by this phenomenon. For example, female Calico cats have unique patterns of fur due to certain areas where different X chromosomes are inactived. The X chromosomes that are activated ...

Sociobiology

... Another successful example was a quantitative description of infanticide by male harem-mating animals when the alpha male is displaced. female infanticide and fetal resorption are active areas of study. In general, females with more bearing opportunities may value offspring less. Also, ...

Sperm

... information needed to create life. Generally, the sex of the offspring is determined by the sperm, through the chromosomal pair "XX" (for a female ) or "XY" (for a male ). Sperm cells were first observed by Antoni van Leeuwenhoek in 1679 . Contents showTocToggle("show","hide") ...

Spermatogenesis

... . As these differentiate they become spermatocytes , spermatids (after meiosis ) and then finally the fully mature spermatozoa. The female counterpart to spermatogenesis is oogenesis . The process of spermatogenesis is highly regulated via hormonal messengers and also the cell-cell ...

Thermoregulation

... in the morning. Also that the curves obtained from rabbit, guinea pig and dog were quite similar to those from man. The mean temperature of the female was higher than that of the male in all the species examined whose sex had been determined. Meals sometimes cause a slight elevation, sometimes a ...

Zygote

... that is the result of fertilization . That is, two haploid cells—usually (but not always) a sperm cell from a male and an ovum from a female —merge into a single diploid cell called the zygote . Animal zygotes undergo mitotic cell divisions to become an embryo . Other ...
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