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Why do endosperm formation does not occur until fertilization take place?
Endosperm formation is triggered by fertilization because it involves the fusion of the two sperm cells with different nuclei in the embryo sac, leading to the triploid (3n) condition necessary for endosperm development. Without fertilization, the endosperm would not receive the necessary genetic contribution to develop properly and support the growing embryo.
What would happen if fertilization does not occur?
After puberty, the ovaries release one egg each month alternatively. The sperms enter through the vagina, travel upwards to the oviduct where they encounter the egg. If the egg is fertilized, a zygote is formed. The zygote repeatedly divided to form the embryo. This embryo trickles down to the uterus. On the uterine wall, the embryo gets implanted. The embryo gets nutrition form a special disc shaped tissue towards the uterine wall called the placenta. It contains villi on the embryo's side and provides nourishment and oxygen from the mother's blood. Waste substances such as carbon dioxide and nitrogenous wastes are taken away from the embryo. After the 9 month gestation period, the child is delivered as a result of rhythmic contractions of the uterus.
Would a 3 day embryo work?
A 3-day embryo is typically not advanced enough for use in assisted reproductive technologies such as in vitro fertilization (IVF). Embryos are usually cultured for 5-7 days until they reach the blastocyst stage before they are transferred into the uterus for implantation.
What is the difference between fertilization and implantation?
the difference is, fertilization is when you want something to grow and you put fertalizer down (it most likely would be on grass) and implantation when you are growing something or you are moving a plant or something like that. :)
Is it possible to have an uneven split of an embryo?
This was a research done by Hans Spemann, an embryologist of the early 20th century in Germany. His research lead him to conclude that the dorsal and ventral (top and bottom) halves of the embryo were different. The top half contained a certain group of cells that organize development. They are visible on the dorsal surface of a 2-cell-stage embryo. The outcome of his constriction experiments depended on exactly where this structure was in relation to the constriction. If one half of the constriction contained the entire structure, it would develop into an embryo that could live and the other half developed into the belly-piece. If the structure was evenly split during the constriction, the result was twin, including Siamese twin, embryos. If it was split unevenly, it resulted (in some cases) an embryo with two heads (a Siamese twin). He also inadvertently discovered a way to clone during this process of constricting embryos as they split.
Why do endosperm formation does not occur until fertilization take place?
Endosperm formation is triggered by fertilization because it involves the fusion of the two sperm cells with different nuclei in the embryo sac, leading to the triploid (3n) condition necessary for endosperm development. Without fertilization, the endosperm would not receive the necessary genetic contribution to develop properly and support the growing embryo.
Assume a sperm has penetrated a polar body and their nuclei fuse Why would it be unlikely for the resulting cell to develop into a healthy embryo?
The presence of a sperm penetrating a polar body suggests an abnormal fertilization event, as polar bodies typically do not contain a full set of chromosomes needed for normal development. Therefore, the resulting cell would likely have an incorrect number of chromosomes, leading to genetic abnormalities that would prevent the development of a healthy embryo.
Where is the development of embryo of an milkfish outside or inside?
maybe.. i would like to know the real answer..
Why must pollen that fertilizes flowers be from the same species?
Pollen from the same species is required for successful fertilization because the pollen grains need to contain matching genetic information to that of the female reproductive structures in the flower. This ensures compatibility and proper development of the embryo. Pollen from different species would not have the necessary genetic instructions for successful fertilization to occur.
What would be the most likely effect of cigarette smoke during embryo development?
Childhood asthma
What are the steps to pollination?
The six steps of pollination are the sporophyte plants with the flowers, the pollen lands on the stigma which goes down to the ovule, the sperm deposits into the embryo sac where the egg gets fertilized, a zygote is produces, the zygote turns into a an embryo, and then the ovule develops into a seed.
What would happen if the sperm could not get into the egg?
If the sperm cannot get into the egg, fertilization cannot occur and pregnancy will not take place. The egg needs to be fertilized by the sperm in order for the genetic material from both to combine and form a zygote, which will eventually develop into an embryo.
Why double fertilization is advantageous for plants?
A single pollen grain has 2 sperm. Double fertilization occurs when 1 of these sperm combines with the egg, and the other sperm combines with a cell (this is called endosperm) That is in order for the seed to keep being produced.Seed has to be germinated, and without the extra sperm (double fertilization) the plant couldn't germinate and would go extinct.
Why does the embryo need a heart?
The embryo needs a heart to establish a circulatory system that supplies oxygen and nutrients to developing tissues and organs. As the embryo grows, it requires a reliable way to transport essential substances and remove waste products, which the heart facilitates through blood circulation. This early development of the heart is crucial for overall growth and the proper functioning of the embryo. Without a functioning heart, the embryo would not survive beyond a certain stage of development.
What would happen if fertilization does not occur?
After puberty, the ovaries release one egg each month alternatively. The sperms enter through the vagina, travel upwards to the oviduct where they encounter the egg. If the egg is fertilized, a zygote is formed. The zygote repeatedly divided to form the embryo. This embryo trickles down to the uterus. On the uterine wall, the embryo gets implanted. The embryo gets nutrition form a special disc shaped tissue towards the uterine wall called the placenta. It contains villi on the embryo's side and provides nourishment and oxygen from the mother's blood. Waste substances such as carbon dioxide and nitrogenous wastes are taken away from the embryo. After the 9 month gestation period, the child is delivered as a result of rhythmic contractions of the uterus.
Would a 3 day embryo work?
A 3-day embryo is typically not advanced enough for use in assisted reproductive technologies such as in vitro fertilization (IVF). Embryos are usually cultured for 5-7 days until they reach the blastocyst stage before they are transferred into the uterus for implantation.
Why is cell diffenntiation important for embryo development?
Differentiation is important during embryonic development as that is the timeframe for specialization. Differentiation allows for neurons, blood cells, skin and muscle cells organize into tissues, then organs, and ultimately into systems.
