...Internal and external fertilization both depend on...
...same species Internal fertilization requires cooperative behavior...
...to copulation. External fertilization requires a moist...
...Species with internal fertilization usually produce fewer...
...species with external fertilization Internal fertilization usually...
...external fertilization Internal fertilization usually results in...
...than does internal fertilization. However, the survival...
...lower for external fertilization than it is...
...is for internal fertilization. The externally fertilized...
...regardless of whether fertilization is external or...
...trimesters. First trimester. Fertilization occurs in the...
...4 days after fertilization the zygote that...
...1 week past fertilization for the blastocyst...
...Abort the embryo. Fertilization can also be...
...donors. In vitro fertilization. ...

...produce eggs. After fertilization, the egg develops...
...cell Product of fertilization Product of meiosis...
...by insects. Single fertilization: sperm + egg...
...or animals. Double fertilization: egg + sperm...
...structure. III. DOUBLE FERTILIZATION. It is characteristic...
...flowering plants. Double fertilization results in the...
...the ovule following fertilization. The ovary enlarges...
...animals, wind, water. FERTILIZATION egg + sperm...
...= zygote double fertilization SEEDS exposed, borne...
...zygote produced by fertilization divides by mitotic...
...accessory organs; internal fertilization; life cycle simple...
...Reproductive adaptations: internal fertilization, shells around the...
...separate in most; fertilization external; many species...
...sexes separate; external fertilization; a few species...
...and hearing. External fertilization. About 70 species...
...or lung. Internal fertilization and separate sexes....
...Sexes separate and fertilization is usually external....
...Ectothermal. Separate sexes; fertilization usually external in...
...in thermoregulation. Internal fertilization and separate sexes;...
...diaphragm. Sexes separate. Fertilization internal; eggs with...
...ossicles. Endothermic. Internal fertilization; mostly viviparous; fetal...
...gametes by mitosis. Fertilization produces the diploid...
...process of double fertilization. POLLINATION Pollination is...
...like decaying flesh. FERTILIZATION Fertilization is the...
...decaying flesh. FERTILIZATION Fertilization is the fusion...
...of gametes. Double fertilization is a unique...
...of seeds without fertilization. Modified stems may...

...Concept 47.1 After fertilization, embryonic development proceeds...
...development occur during fertilization and the three...
...adult structures grow. Fertilization activates the egg...
...specialized cell types. Fertilization combines haploid sets...
...key function of fertilization is to activate...
...development. Sea urchin fertilization has been extensively...
...differences in details, fertilization and early development...
...prevents polyspermy, the fertilization of the egg...
...form a protective fertilization envelope, which resists...
...attached sperm. The fertilization envelope and other...
...90 minutes after fertilization. Species vary in...
...of meiosis. Upon fertilization, meiosis is quickly...
...female reproductive tract. Fertilization in terrestrial animals,...
...in sea urchin fertilization. Instead, the envelopes...
...a common nucleus. Fertilization is much slower...
...called cleavage follows fertilization. During this period,...
...the time of fertilization. The plasma membrane...
...most mammalian species, fertilization takes place in...
...during oogenesis or fertilization. In many frogs,...
...anterior-posterior body axis. Fertilization in frogs triggers...

...meiotic recombination and fertilization. By producing diverse...
...46.2 Mechanisms for fertilization bring together sperm...
...The mechanisms of fertilization, the union of...
...reproduction. In external fertilization, eggs and sperm...
...species with internal fertilization, sperm are deposited...
...reproductive tract, and fertilization occurs within the...
...the tract. Successful fertilization requires careful timing....
...required for external fertilization, to prevent gametes...
...species with external fertilization, timing is crucial...
...spawning. When external fertilization is not synchronous...
...that leads to fertilization of the eggs...
...one male. Internal fertilization is an adaptation...
...dry environment. Internal fertilization requires cooperative and...
...Species with external fertilization tend to produce...
...few survive. Internal fertilization tends to involve...
...the vagina, where fertilization occurs. In many...
...enough to attempt fertilization. Eggs, which provide...
...the female tract. Fertilization or conception occurs...
...four days after fertilization, the embryo reaches...
...one week after fertilization, the blastocyst forms...
...leading to separate fertilization and implantation of...
...gonads; others prevent fertilization by keeping sperm...
...of an embryo. Fertilization can be prevented...
...method of preventing fertilization. Sperm may be...
...IUD interferes with fertilization and implantation. Pregnancy...
...pills, which prevent fertilization or implantation with...
...with implantation if fertilization occurs. Hormone-based contraceptives...
...In in vitro fertilization (IVF), oocytes are...
...oocyte to achieve fertilization. Though costly, IVF...

...38.1 Flowers, double fertilization, and fruits are...
...(eggs and sperm). Fertilization results in diploid...
...Fs”: flowers, double fertilization, and fruits. Seed...
...that leads to fertilization. Some plants, such...
...between flowers. Double fertilization gives rise to...
...is called double fertilization. Double fertilization ensures...
...double fertilization. Double fertilization ensures that the...
...been fertilized. Double fertilization prevents angiosperms from...
...researchers from observing fertilization in plants, but...
...and observe plant fertilization in vitro. The...
...to polyspermy, the fertilization of an egg...
...nutrients. After double fertilization, the ovule develops...
...development. After double fertilization, the triploid nucleus...
...wind or animals. Fertilization triggers hormonal changes...
...mechanisms that prevent self-fertilization. The various barriers...
...barriers that prevent self-fertilization contribute to genetic...
...mechanisms may prevent self-fertilization. For example, in...
...the blocking of fertilization. For example, an...
...In sporophytic self-incompatibility, fertilization is blocked by...
...breeders must prevent self-fertilization by laboriously removing...
...endosperm develop without fertilization. The transfer of...

...2 days after fertilization the tiny fish,...
...is small (apprto fertilization). It is a...
...to create a fertilization cone while the...
...lifted (12 minutes post-fertilization), the egg ....
...zebrafish embryo from fertilization to mid-blastula. Shown...
...removed. (A) After fertilization, the nonyolky cytoplasm...
...al. (2003). Following fertilization, cytoplasmic streaming within...
...and length of Fertilization (0 hours) Newly...
...fidawn, and with fertilization external, all stages...