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  1. Reproduction (2286 bytes)
    3: '''Reproduction''' is perhaps most commonly used in the context of [[biology|biological]] re...
    5: ...usion of haploid gametes. Then it forms a diploid zygote.
    10: ...uce few offspring. Others reproduce quickly, but unless raised in an artificial environment, most offs...
  2. Ovary (3278 bytes)
    7: ...us]] to [[testes]] in males. Most [[bird]]s have only one functioning ovary; [[snake]]s have two, one ...
    9: ...egg resulting from union with a sperm becomes a [[zygote]] and then an [[embryo]] as it develops.
  3. Biological life cycle (3738 bytes)
    1: ...fertilization]]s of [[gamete]]s, resulting in a [[zygote]] (see [[Reproduction]]). To return to the haploi...
    9: ... from these individuals or cells fuse to become a zygote.
    11: ...ygotes are the only diploid cell; mitosis occurs only in the haploid phase.
    22: ...r, the gametes would fuse and produce the diploid zygote with gametes of the opposite type.
    24: ...metes are the only haploid cells; mitosis occurs only in the diploid phase.
  4. Ploidy (4598 bytes)
    8: ...ps and ants are also haploid. For organisms that only ever have one set of chromosomes, the term '''mo...
    10: ...id sex cells that can combine to form a diploid [[zygote]], for example animals are primarily diploid but ...
    16: ...cells and the other has diploid cells. Most commonly, the male is haploid and the female is diploid. ...
    34: ...me copy number of 1 to 4, and that number is commonly fractional, counting portions of the chromosome ...
  5. Animal (16429 bytes)
    61: ...er non-motile [[ovum|ova]]. These fuse to form [[zygote]]s, which develop into new individuals.
    65: A [[zygote]] initially develops into a hollow sphere, called...
    78: ...ain germ layers, the ectoderm and endoderm, with only scattered cells between them. As such, these an...
  6. Deuterostome (1974 bytes)
    24: In both deuterostomes and protostomes, a zygote first develops into a hollow ball of cells, calle...
  7. Animals (10378 bytes)
    7: *Heterotrophic Nutrition: Unlike plants, animals cannot synthesize their own fo...
    22: ...als undergo a series of developmental stages from zygote (fertilized egg) to adult form. This development ...
    41: ...mal: As mentioned earlier, the blue whale is not only the largest animal but also the largest mammal. ...
  8. Human (48024 bytes)
    43: ...ace''. Until the [[20th century]], ''human'' was only used adjectivally ("pertaining to mankind"). Nom...
    54: ...piens sapiens''. They are usually considered the only surviving species in the genus ''[[Homo (genus)|...
    80: ...ng: XX means a girl, while XY means a boy. As the zygote grows through successive stages inside the female...
    116: ...gene on the other X chromosome. But men are [[hemizygote|hemizygous]] for the blood-clotting gene since th...
    124: ...in the animal kingdom. Certainly, humans are the only technologically advanced animal. Along with neur...
  9. Embryo (1444 bytes)
    7: ...he first [[cell division|division]] of the '''''[[zygote]]''''' (a fertilized [[ovum]]) until it becomes a...
  10. Fern (7930 bytes)
    21: # The fertilized gamete (diploid [[zygote]]) grows by cell division into a sporophyte (the ...
    42: Two related groups of plants, commonly known as ferns, are actually more distantly rela...
  11. Amniotic sac (3222 bytes)
    9: The amnion grows and begins to fill, mainly with water, around two weeks after [[fertilisati...
    11: ...aters are released when the amnion ruptures, commonly known as when a woman's "waters break" or "spont...
    19: ...tus from one single [[zygote]] (monozygotic, commonly known as identical twins) is located within the ...
  12. Moon Jelly (10363 bytes)
    18: ...in 3% [[salinity]] water but are typically found only in water with 6% salinity (Russell, 1953).
    21: ...from a different medusa to form a [[zygote]]. The zygote then turns into a [[blastula]], then [[gastrula]]...
    23: ...s breaks off and forms an [[ephyra]]. The ephyra enlarges and matures to become the last stage, adult ...
    104: ... Information. October 23, 2001. [http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi]

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