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  Encyclopedia of Keywords > Sperm Cell > Egg Cell   Michael Charnine

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DAY 14
Review of Short Phrases and Links

    This Review contains major "Egg Cell"- related terms, short phrases and links grouped together in the form of Encyclopedia article.


  1. An egg cell is also called an ovum. (Web site)
  2. When an egg cell is fertilized by a sperm cell during reproduction, the embryo almost exclusively inherits the maternal mitochondria present in the egg. (Web site)
  3. If the egg cell is not fertilized within 24 hours after its release from the ovary, it will stop developing and will dissolve before reaching the uterus.
  4. The egg cell is always asymmetric, having an " animal pole " (future ectoderm and mesoderm) and a " vegetal pole " (future endoderm).
  5. The egg cell is swept into the fallopian tube entrance by its waving structures called fimbriae.

Three Cells

  1. Three cells sit at one end of the embryo sac: two synergid cells flanking the egg cell.

Meaning Egg

  1. The word is derived from Latin, meaning egg or egg cell.

Seven Cells

  1. One of the seven cells is an egg cell. (Web site)

Unfertilized Egg Cell

  1. The unfertilized egg cell or zygote contained within the isolated embryo sac is transformed with a foreign gene. (Web site)

Sperm Nuclei

  1. Downy mildews and water molds produce motile cells for part of their life cycle, have hyphal walls that lack chitin, and make an egg cell and sperm nuclei. (Web site)


  1. This form of Down syndrome is caused by abnormal cell division during the development of the sperm cell or the egg cell. (Web site)
  2. Sometimes each sperm fertilizes an egg cell and one zygote is then aborted or absorbed during early development. (Web site)
  3. These hormones signal the development and release a single egg cell from one of the ovaries.


  1. Mitosis is the process by which a single human zygote (fertilized egg cell) becomes a complex organism consisting of over 100 trillion cells. (Web site)


  1. They are specialized for motility, seeking out an egg cell and fusing with it in a process called fertilization. (Web site)
  2. As a fertilized egg cell repeatedly divides to grow into a mature animal, most of the resulting cells become ever more specialized.


  1. When a sperm and egg cell combine the new cell formed contains DNA from both parents. (Web site)


  1. The mitochondria in mammalian sperm are usually destroyed by the egg cell after fertilization. (Web site)


  1. A single baby is formed when an egg cell is fertilized by a single sperm cell to form a zygote.
  2. One sperm fertilizes the egg cell and together they form the zygote. (Web site)
  3. If during the first week of cell division, the fertilized egg cell, or zygote, divides into 2 zygotes, identical twins will form.

Day 14

  1. On day 14, it ruptures and releases the egg cell in a process known as ovulation.


  1. Embryogenesis in plants can commence from cells other than the fertilized egg cell.


  1. In sexual reproduction, the sperm cell fuses, or bonds, with the egg cell to produce a cell that is genetically different from either of the parent cells.


  1. In organisms that reproduce sexually, once a sperm fertilizes an egg cell, the result is a cell called the zygote that has all the DNA of two parents.

Genetic Material

  1. When the two nuclei fuse, their genetic material combines together to create a fertilized egg cell which is called a zygote.


  1. If a sperm does fertilize the egg cell, tiny hair-like cells called cilia will transport it towards the uterus.
  2. Over the next 13 days, the growing follicle releases estrogen, a hormone that prepares the lining of the uterus to receive a fertilized egg cell.


  1. In plants, parthenogenesis means the development of an embryo from an unfertilized egg cell, and is a component process of apomixis. (Web site)

Body Cavity

  1. The sweeping motion of the fimbriae draws the egg cell through a very small space in the open body cavity into the uterine, or fallopian, tube.

Multicellular Organism

  1. By the time a sperm or egg cell itself is stressed, the multicellular organism is probably dead. (Web site)

Haploid Cells

  1. Haploid cells formed by meiosis in plants; divide by mitosis to form several daughter cells, one of which functions as the egg cell.

Diploid Cell

  1. The development of a diploid cell into a haploid ovum or egg cell.


  1. At the micropyle end of the megagametophyte an egg cell is flanked by two synergids.


  1. Here fertilization of an unreduced 4 x egg cell by 2 x pollen, and an endopolyploid endosperm is likely. (Web site)


  1. In some protists, fertilization also involves sperm nuclei, rather than cells, migrating toward the egg cell through a fertilization tube. (Web site)
  2. The egg cell contains relatively few mitochondria, but it is these mitochondria that survive and divide to populate the cells of the adult organism. (Web site)
  3. And at the end of 3 days, the fertilized egg cell has become a berry-like structure made up of 16 cells.


  1. In oomycetes, the zygote forms through the fertilization of an egg cell with a sperm nucleus and enters a resting stage as a diploid, thick-walled oospore. (Web site)


  1. An opening that was left at the apical end, evolved into the micropyle, it permitted pollen to enter and to fertilize the egg cell.

Female Gametophyte

  1. When the sperm nuclei reach the female gametophyte, one sperm nucleus and the egg cell unite to form a new 2n zygote (which grows into an embryo).


  1. It is preceded by a zygote, the fertilized egg cell, and succeeded by an embryo.
  2. Embryology refers to the development of the fertilized egg cell (zygote) and its differentiation into tissues and organs.
  3. The fertilized egg cell is a zygote that develops into the diploid embryo of the sporophyte. (Web site)


  1. One of the two sperm cells fertilizes the egg cell, forming a diploid zygote or embryo, also called the ovule. (Web site)
  2. One of the cells near to the micropyle end of the ovule is the haploid female gamete (egg cell). (Web site)
  3. Oogenesis occurs within the embryo sac and leads to the formation of a single egg cell per ovule. (Web site)


  1. At fertilization of an egg cell by a sperm, the egg nucleus and sperm nucleus each contribute equally to the genetic makeup of the zygote nucleus.
  2. A form of reproduction where an egg develops without the fusion of sperm with the egg cell.
  3. The pollen of angiosperms contains two sperm, one of which fertilizes the egg cell in the female gametophyte.


  1. Fertilization of the ovum (egg cell) usually takes place in the Fallopian tube.
  2. Oogenesis is the creation of an ovum (egg cell) in the ovarian follicle of the ovary.

Pollen Tube

  1. The pollen tube provides a pathway for the sperm to reach the egg cell in the ovule. (Web site)

Embryo Sac

  1. One sperm nucleus in the pollen tube fuses with the egg cell in the embryo sac, and the other sperm nucleus fuses with the diploid endosperm nucleus. (Web site)
  2. The megagametophyte (also called opening of the embryo sac develops into the egg cell.
  3. One sperm fertilizes the egg cell and the other sperm combines with the two polar nuclei of the large central cell of the embryo sac. (Web site)


  1. In plants, it is the structure that develops in the megagametophyte, as result of the fertilization of an egg cell, or occasionally without fertilization. (Web site)
  2. The pistil has a bulbous base (the ovary) containing the ovules, which develop into seeds after fertilization of egg cell(s) in the ovule.
  3. The megagametophyte (also called embryo sac in flowering plants) produces the egg cell for fertilization. (Web site)


  1. After fertilization (joining of the sperm and egg cell), the zygote develops into an embryo (young sporophyte). (Web site)
  2. When this happens, the sperm and egg cell fuse to form a zygote, the cell from which the sporophyte stage of the life cycle will develop.
  3. The synergid that the cells were released into degenerates and one sperm makes its way to fertilize the egg cell, producing a diploid (2 n) zygote. (Web site)

Sperm Cells

  1. Found in sperm cells, it helps digest the coatings surrounding an egg so the sperm can penetrate the egg cell membrane.
  2. The transformed sperm cells are then used to deliver the foreign gene to the egg cell during in vitro fusion to form a zygote. (Web site)
  3. Oogenesis produces an egg cell, while spermatogenesis produces sperm cells.

Sperm Cell

  1. The gametophyte is not the full fern, but a plant with only half the genetic material of the adult fern, rather like a sperm cell or an egg cell. (Web site)
  2. The egg cell of the embryo sac united with the other sperm cell to make a zygote.
  3. The male gamete is called a sperm cell, and the female gamete is termed an egg cell. (Web site)

Egg Cell

  1. In animals, the male gamete, called the sperm, fuses with the female gamete, called the ovum, or egg cell, to form a zygote. (Web site)
  2. During fertilization, a sperm cell in a pollen tube fuses with the egg cell of an ovule, giving rise to the plant embryo. (Web site)
  3. One of the two sperm nuclei in the pollen tube unites with the egg cell in the ovule to form a zygote, which develops into the embryo. (Web site)


  1. Sperm Cell
  2. Nature > Life > Animals > Zygote
  3. Embryo Sac
  4. Pollen Tube
  5. Fertilization
  6. Books about "Egg Cell" in

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  Short phrases about "Egg Cell"
  Originally created: April 04, 2011.
  Links checked: February 13, 2013.
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