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What does a diploid cell inside a basidium produce as a result of meiosis?
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∙ 14y ago
Basidiospores
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∙ 14y ago
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What are structures inside the nucleus that duplicate when a cell undergoes mitosis and separate when a cell undergoes meiosis?
what duplicates when a call undergoes mitosis and separate when a cell undergoes meiosis
Does spermatogenesis take place in the testes inside the seminiferous tubules?
Spermatogenesis is the process in which the male germ cells undergo meiosis. The process begins to take place in the testes inside the seminiferous tubules.
How are spores produced?
by sporophytes through meiosis
What are the major facts about oogenesis?
Oogenesis or rarely oögenesis is the creation of an ovum (egg cell). In mammals, oogenesis occurs in the ovarian follicle of the ovary. Oogonial transformation into oocytes (oocytogenesis) is completed either before or shortly after birth. Further development comes to a rest during prometaphase I of meiosis, known as the dictyate stage, until puberty triggers oogenesis. In ascaris, the oocyte does not even begin meiosis until the sperm touches it. Oogenesis is the process in which the primary oocyte turns to an ovum undergoing meiosis. At first there is a diploid oocyte called the primary oocyte. Meiosis I occurs in which synapsis occurs and tetrads form and crossing over as well and this becomes the secondary oocyte and the first polar body. The haploid secondary oocyte undergoes meiosis II forming an ootid and another polar body. The first polar body also undergoes meiosis II forming two more polar bodies for a total of three. All three polar bodies at the end of Meiosis II disintegrate leaving only the ootid which undergoes maturation and eventually matures into an ovum. It is interesting to note that such an important process in animal life cycles is done completely without the aid of spindle-coordinating centrosomes. Many protists produce egg cells in structures termed archegonia. Some algae and the oomycetes produce eggs in oogonia. In the brown alga Fucus, all four egg cells survive oogenesis, which is an exception to the rule that generally only one product of female meiosis survives to maturity. In plants, oogenesis occurs inside the female gametophyte via mitosis. In many plants such as bryophytes, ferns, and gymnosperms, egg cells are formed in archegonia. In flowering plants, the female gametophyte has been reduced to an eight-celled embryo sac within the ovule inside the ovary of the flower. Oogenesis occurs within the embryo sac and leads to the formation of a single egg cell per ovule.
Where is the nucleolus found what does it produce?
The nucleolus is found inside the nucleus, and it makes ribosomes.
Do sac fungi produce spores inside a small sac?
A small sac called a basidium
What occurs inside the gametangium?
Meiosis
What are the differences between ascomycetes and basidiomycetes?
The Basidiomycetes or the Ascomycetes are 2 main groups of fungi .In the Basidiomycetes, the spores are produced externally, on the end of specialised cells called basidia.In Ascomycetes, spores are produced internally, inside a sac called an ascus.Asci and basidia are both microscopic structures.Spores are produced by meiosis .BasidiomycetesAscomycetesFungi with spores produced externally, on specialised cells called basidia.Typically, there are 4 spores per basidium .Fungi with spores produced inside a sac called an ascus.Each ascus usually contains 8 spores produced by meiosis followed by mitosis .
How do fungi usually reproduce?
They usually reproduce asexually via spores because this is a faster method, but this will only allow the cells to clone themselves...often under stress or changing environments the fungi will reproduce sexually which means they spores are like humans (each generation is different from past) so they can evolve to suit a situation quickly. Fungi like mould cannot reproduce sexually, while basidiomycetes (mushrooms) or ascomycetes (the kind that stain wood) can opt to reproduce via either method. for mushrooms, inside the basidium are 2 haploid nuclei which fuse together to form a diploid nucleus...which undergoes meiosis to produce 4 haploid cells which become the basidioSPORES and are blown in the wind or picked up by passing animals and dispersed elsewhere. Some spores can be sticky.
How do all fungi usually reproduce?
They usually reproduce asexually via spores because this is a faster method, but this will only allow the cells to clone themselves...often under stress or changing environments the fungi will reproduce sexually which means they spores are like humans (each generation is different from past) so they can evolve to suit a situation quickly. Fungi like mould cannot reproduce sexually, while basidiomycetes (mushrooms) or ascomycetes (the kind that stain wood) can opt to reproduce via either method. for mushrooms, inside the basidium are 2 haploid nuclei which fuse together to form a diploid nucleus...which undergoes meiosis to produce 4 haploid cells which become the basidioSPORES and are blown in the wind or picked up by passing animals and dispersed elsewhere. Some spores can be sticky.
What is a cell consider if two of each type of chromosomes are present inside the cell?
Diploid.
Are elaters in bryophytes haploid or diploid?
Both the elaters and the spores inside the spore capsule are haploid.
Are matched pairs meaning there are two copies?
inside the nucleus of cell indicate the organism is diploid.
What are the main events in the life cycle of an angiosperm?
The angiosperm life cycle begins with a diploid (2n) flower on the mature sporophyte plant. Within the anther, the microsporocytes develop and undergo meiosis (reduction of chromosomes) to produce haploid (n) microspores. Each of these undergoes one mitotic division to produce a generative cell and a tube cell. Together they make an immature microgametophyte, or pollen grain. The generative cell completes a second mitotic division to produce two sperm nuclei. Inside the ovule a single megasporocyte develops, undergoes meiosis, and produces four haploid (n) megaspores. Three of these die off, while the fourth undergoes three mitotic divisions to produce an eight-nucleate embryo sac, or mature megagametophyte. Upon pollination, the pollen grain germinates on the stigma, a pollen tube grows down the style and into the ovary through the micropyle. One sperm nucleus fuses with the egg to create a diploid (2n) zygote, while the other sperm nucleus fuses with the two polar nuclei to produce the nutritive, triploid endosperm. The embryo develops inside the embryo sac, integuments of the ovule form a protective seed coat around it that provides protection and nutrients. The seed is then shed from the fruit and the development of the embryo is temporarily halted until the proper conditions are established. Once the proper conditions are established seed germination takes place and the embryo grows into a mature diploid (2n) sporophyte, which produces flowers and completes one cycle of the alternation of generations.
What are structures inside the nucleus that duplicate when a cell undergoes mitosis and separate when a cell undergoes meiosis?
what duplicates when a call undergoes mitosis and separate when a cell undergoes meiosis
Some plants produce seeds that develop inside of what?
some plants produce seeds that develop inside of what?
What sperm is a formed during meiosis?
You stick your penis inside the vagina and made babies rapidly.
