Is an egg from a duck fertilized upon laying if a male is present and has mated with the female or does fertilization occur after laying?
As with chicken eggs, fertilization occurs prior to laying the egg. It takes a week after mating for a duck's eggs to be fertile.
Unfertilized egg is the one from which the rooster not matted with the hen. usually hens laying eggs without the help of roosters(no mattting). that eggs are simply eggs which are not fertilized by the rooster's semen. the hens laying Fertilized eggs after matting with the rooster. normally the hens producing eggs for every 24 to 30 hours in their life cycle when they are in adult. its just like menstruation present in the humans…
My hen and rooster are very young the hen has only started laying is it too soon for the eggs to be fertilized?
The modes of fertilization vary. Most frogs practice external fertilization, the females laying eggs in water and the males spraying sperm over them. Primitive salamanders have external fertilization, but most have internal fertilization, with the female taking up the male's spermatophore. All caecilians have internal fertilization, and the male deposits sperm in the cloaca of the female by using the end of his cloaca as an intromittent organ.
Frogs use external fertilization. both mates will excrete mucus out of their bodies... the mucus contains their sex cells... therefore, the male and female mucus will mix up and causes fertilization. External, the female lays eggs onto small braches, leaves or rocks in a pond/ river or close to a water source, the male then fertilizes them (externally), in most cases as the female is laying the eggs
External fertilization would be a fish laying unfertilized eggs and the male depositing sperm on top of the eggs, which fertilize the eggs out of the female fish's body, or externally. Internal fertilization is where the male deposits his sperm inside the female, and the sperm then travel to the egg/eggs and fertilize it/them, internally.
Parakeets lay eggs. A female can go into a laying cycle even if there is no male around to have fertilized them. In that case the eggs will obviously be infertile and will not hatch. A typical laying cycle is where the female lays from two up to twelve eggs. This is called a "clutch". She normally will lay an egg every other day or every third day until she is through the clutch. How…
A hen will lay eggs, regardless of whether or not they are fertilized. They are laid in exactly the same way a fertile egg is. The act of mating or fertilization has no effect on the hens laying cycle. Eggs are infertile if the hen has never been mated, or has not been mated with in the past 2 weeks.
Why does organisms that use internal fertilization produces less offspring than the ones that use external fertilization?
Because internal fertilization requires a womb and placenta to protect and nourish the growing embryos - which limits the number of offspring the mother can produce. Laying eggs outside the body means the female can potentially produce many more off-spring, and thus vastly increase the chances of the species survival.
I own a female Rainbow Lorikeet and she is periodically laying eggs. There is no male present. Is this normal?
A Male leopard will engage with a female leopard and that is when all the eggs that are inside will be fertilised and when they grow to their certain height and will be developed on the outer shell where they would be born. After the laying it is best to remove the eggs from the female as reptiles sometimes can't make the best parents and the eggs should be placed in an incubator. After the…
Lay eggs. The most common reproductive strategy in all groups of reptiles is that of laying eggs. Edit: The 'reproductive strategy common in all groups of reptiles' is - internal fertilization through copulation. This distinguishes them from amphibians who lay soft-bodied eggs in water, which are then fertilized by the male ejecting a 'cloud of sperm'.
Depending on the species, egg-laying occurs anywhere from three to eight weeks after mating. The American crocodile lays eggs approximately three weeks after fertilization; Nile crocodiles lay eggs about eight weeks after fertilization; Saltwater crocodiles lay eggs four to six weeks after fertilization.
There are many fish and amphibians for which the female lays soft-shelled unfertilized eggs, which the male then fertilizes. Because the fertilized eggs were never inside the female's body, one might say that there was no gestation period. However, all animals that have internal fertilization have some length of gestation period. For most animals, the gestation period is much shorter than the time between laying the eggs and the eggs hatching: for example, a chicken…
Lay, laying, lying, and laid are all verbs. Lay is a present tense transitive verb and is also the past tense of the present tense intransitive verb lie. Laying is the present participle of lay and is used to create the progressive tenses. Lying is the present participle of the verb lie. Laid is the past tense of lay.