KeyWEn.com  
 
 
 
Fertilization       Article     History   Tree Map
  Encyclopedia of Keywords > Cooking > Foods > Eggs > Egg > Fertilization   Michael Charnine

Keywords and Sections
INTERNAL
SPORES
SEXUALLY
OFFSPRING
PENIS
TIME
JOINING
PLACE
BLASTULA
CLEAVAGE
MECHANISMS
FORMATION
WATER
IRRIGATION
BIRTH
FIVE DAYS
ANIMALS
REPTILES
MAMMALS
AMPHIBIANS
VAGINA
SEMEN
FUSION
PREGNANCY
DEVELOPMENT
BOTANY
FRUIT
ORGANISM
CHROMOSOMES
FLOWERS
FLOWER
WEEDING
MANURE
ORGANIC FARMS
EPHEDRA
FORM
AECIA
NUCLEI
CELL NUCLEI
ASEXUAL REPRODUCTION
OPPOSITE MATING TYPES
PARENT
GENETIC MAKEUP
MALE
GAMETOPHYTE
GERMINATION
Review of Short Phrases and Links

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

Definitions

  1. Fertilization is the joining of the egg and the sperm in the outer third of the Fallopian tube closest to the ovary.
  2. Fertilization is accomplished by a variety of pollinators, including wind, animals, and water.
  3. Fertilization is internal in most but not all groups.
  4. At fertilization, the gametes combine to produce a zygote with the full number of chromosomes for that particular species.
  5. Fertilization is internal, with spermatophore transferred in ways similar to many arachnids.

Internal

  1. Organisms (with some exceptions) which use the process of internal fertilization tend to spend much of their lives on land.

Spores

  1. These spores grow into multicellular organisms without the process of fertilization.

Sexually

  1. Fungi may also reproduce sexually by means of the haploid spores developing into haploid hyphae that are capable of fertilization.

Offspring

  1. Parthenogenesis: A process which may occur in some sexually reproducing animals where offspring are produced without fertilization.
  2. When the female organism lays eggs and they develop into an offspring without any fertilization, it is called parthenogenisis.
  3. An advantage of external fertilization is that it results in the production of a large number of offspring.

Penis

  1. Eight weeks after fertilization, the foreskin begins to grow over the head of the penis, covering it completely by 16 weeks.

Time

  1. Therefore, the necessity of the sperm nucleus for fertilization was discussed for quite some time.

Joining

  1. Fertilization: the joining of sperm and egg in an ovule.
  2. After fertilization (joining of the micro- and megaspore), the resulting embryo, along with other cells comprising the ovule, develops into a seed.
  3. Thus, the division mechanism of meiosis is a reciprocal process to the joining of two genomes that occurs at fertilization.

Place

  1. The transition must take place at a time that is favorable for fertilization and the formation of seeds, hence ensuring maximal reproductive success.
  2. The meaning of semen quality becoming worse means a decrease in the number of sperm reaching the place of fertilization.
  3. This stage is called ovulation, and is the optimum time for fertilization to take place.

Blastula

  1. Following fertilization, the zygote undergoes a series of mitotic cell divisions resulting in a ball of cells called the blastula.
  2. Week 1-3 5–7 days after fertilization, the blastula attaches to the wall of the uterus (endometrium).
  3. Week 1-4 5-7 days after fertilization, the blastula attaches to the wall of the uterus (endometrium).

Cleavage

  1. Cleavage: is a succession of rapid mitotic cell divisions following fertilization and produces a multi cellular embryo, the blastula.

Mechanisms

  1. Understanding the mechanisms and conditions by which male gametes mature and take part in fertilization are crucial goals in the study of plant reproduction.

Formation

  1. The process begins with pollination, is followed by fertilization, and continues with the formation and dispersal of the seed.
  2. Fertilization leads to the formation of a zygote.
  3. Note the formation of endosperm by "double fertilization".

Water

  1. The basic Mollusk (Sea Shell) pattern is to have separate sexes, with sperm and eggs spawned into the water, where fertilization and early development occur.
  2. Motile sperm cells typically move via flagella and require water in order to swim toward the egg for fertilization.

Irrigation

  1. And the answer could be anything from the species of wheat to grow to using cover crops to irrigation to fertilization.

Birth

  1. The stage in development from the end of the embryonic stage, 7-8 weeks after fertilization, to developed organism that ends at birth.
  2. Among other suggestions for Cernunnos has been a Celtic triad of fertilization, maturation, and harvest, or birth, life, and death.
  3. Some fish species use internal fertilization and then disperse the developing eggs or give birth to live offspring.

Five Days

  1. Blastocyst A stage of embryo development about five days after fertilization.
  2. Allowing in vitro embryo s to reach blastocyst stage (typically five days after fertilization) before transferring them into the uterus.

Animals

  1. Exceptions are animals and some protists, who undergo gametic meiosis immediately followed by fertilization.
  2. Many other animals reproduce sexually with external fertilization, including many basal vertebrates.

Reptiles

  1. In most birds and reptiles, an egg (Latin ovum) is the zygote, resulting from fertilization of the ovum.

Mammals

  1. Mammals like humans have both their fertilization and initial stages of development occur within the female organism.

Amphibians

  1. Amphibians rely on external fertilization in the water.
  2. In amphibians, a rearrangement of the egg cytoplasm occurs at the time of fertilization.

Vagina

  1. During sexual intercourse, the vagina is lubricated further and functions to direct the penis toward the cervix to optimize fertilization.

Semen

  1. Once the semen is deposited at the base of the uterus, the sperm begin a long journey to fertilization.

Fusion

  1. The fusion of the male sperm and female oocyte leads to fertilization and formation of the zygote (or fertilized embryo).

Pregnancy

  1. If other treatments aren't effective, artificial insemination or in vitro fertilization can be used to produce a pregnancy when low sperm count is a factor.

Development

  1. The result of fertilization is the development of the ovule into the seed.
  2. Parthenogenesis: Development of an insect, from egg to adult, without fertilization.
  3. A human organism from 57 days following fertilization until birth, excluding any time during which its development has been suspended.

Botany

  1. In botany, the part of a seed-bearing plant that contains the fertilized seeds capable of generating a new plant (see fertilization).

Fruit

  1. After fertilization, the ovule develops into the seed and the carpel develops into the fruit.
  2. After fertilization, the ovary enlarges to form the fruit.
  3. After fertilization the ovary and sometimes accessory parts develop into the fruit; parthenocarpy is fruit production without fertilization.

Organism

  1. During fertilization, the nucleus of a sperm fuses with the nucleus of the much larger egg cell (the female reproductive cell) to form a new organism.

Chromosomes

  1. The formation of ring chromosomes following fertilization also cause genetic disorders.

Flowers

  1. The flowers are insect pollinated and successful fertilization leads to the production of prolific numbers of bright red fruits from November to February.

Flower

  1. After fertilization, portions of the flower develop into a fruit containing the seeds.
  2. After fertilization, a flower develops into a fruit containing the seed(s).
  3. The function of the flower is that of ensuring fertilization of the ovule and development of fruit containing seeds.

Weeding

  1. In general, cultivation practices are similar to those used to grow maize: earthing up, fertilization in two stages and weeding.
  2. The production of shrub topiaries involves constant clipping, corrective pruning, tying, and weeding as well as regular irrigation and fertilization.

Manure

  1. Both conventional and organic agriculture utilize manure as part of regular farm soil fertilization programs.

Organic Farms

  1. Interestingly, many organic farms rely on manure that is not organic(meaning it comes from animals not fed and raised organically) to continue fertilization.

Ephedra

  1. Two diploid embryos are produced by double fertilization in Gnetum and Ephedra.

Form

  1. Right after fertilization the zygote is mostly inactive but the primary endosperm divides rapidly to form the endosperm tissue.
  2. Soon after fertilization, however, the egg and sperm nuclei merge to form a zygote with the proper number of chromosomes.
  3. Week 2 (day 1-7 of fertilization) Fertilization of the ovum to form a zygote.

Aecia

  1. Yellow to orange in colour, aecia develop after fertilization and bear one-celled spores (aeciospores, or aecidiospores).
  2. Successful fertilization leads to the production of structures known as aecia on the other side of the Patrinia leaf.

Nuclei

  1. Karyogamy, the fusion of nuclei and the second step in the process of fertilization, occurs to yield a cell with a diploid nucleus.

Cell Nuclei

  1. The coming together and fusing of cell nuclei, as in fertilization.

Asexual Reproduction

  1. Defined broadly as any form of asexual reproduction and narrowly, and more commonly, as seed production without fertilization.

Opposite Mating Types

  1. In heterothallic species, two strains of opposite mating types are required for fertilization.

Parent

  1. The sex cells combine in fertilization to produce a new individual with the full number of genes — half from each parent.

Genetic Makeup

  1. At fertilization of an egg by a sperm, the egg nucleus and sperm nucleus each contribute equally to the genetic makeup of the zygote nucleus.

Male

  1. If male and female sex cells from the same species come together, fertilization takes place and seeds are made.
  2. If male and female gametophytes are not direct competitors for substrate-space, then their direct interactions are limited to fertilization of eggs by sperm.
  3. The growth and development occurs without fertilization by a male.

Gametophyte

  1. These spores grow into multicellular individuals (called gametophyte s in the case of plants) without a fertilization event.
  2. Label the gametophyte and sporophyte stages and the locations of gamete production, fertilization, and spore production.

Germination

  1. Woo,-I.S. 1991. Germination and emergence of major upland weeds, 2; Effects of soil depth, pH and fertilization on emergence of weeds.

Categories

  1. Cooking > Foods > Eggs > Egg
  2. Nature > Life > Animals > Zygote
  3. Sperm
  4. Nature > Life > Animals > Embryo
  5. Meiosis

Related Keywords

    * Acrosome * Angiosperms * Apomixis * Ascogonium * Blastocyst * Cells * Copulation * Diploid Zygote * Egg * Eggs * Egg Cell * Egg Cells * Egg Fertilization * Embryo * Embryos * Embryo Sac * External Fertilization * Fallopian Tube * Female * Females * Female Gametes * Female Gametophyte * Fertilized Egg * Fetus * Flowering Plants * Gamete * Gametes * Gametogenesis * Gymnosperm * Gymnosperms * Hollow Ball * Humans * Human Embryo * Implantation * Internal Fertilization * Ivf * Male Gamete * Meiosis * Micropyle * Mitosis * Nucellus * Oocyte * Oogenesis * Ova * Ovaries * Ovary * Ovule * Ovules * Ovum * Parthenogenesis * Plants * Pollen * Pollen Grain * Pollen Grains * Pollen Tube * Process * Reproduction * Result * Seed * Seeds * Self-Fertilization * Sexual Reproduction * Single Sperm * Sperm * Spermatozoa * Spermatozoon * Sperm Cells * Syngamy * Tube * Uterine Tube * Uterus * Vitro Fertilization * Weeks * Zona Pellucida * Zygote
  1. Books about "Fertilization" in Amazon.com

Book: Keywen Category Structure


  Short phrases about "Fertilization"
  Originally created: August 01, 2010.
  Please send us comments and questions by this Online Form
  Please click on Move Up to move good phrases up.
0.0233 sec. a=1..