Review of Short Phrases and Links|
This Review contains major "Diploid"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Haploid and diploid are terms referring to the number of sets of chromosomes in a cell.
- Silene nutans is a diploid, mainly outcrossing, herbaceous, perennial plant .
- The nuclear genome (being diploid) is divided into 46 linear DNA molecules, each contained in a different chromosome.
- The cell is still considered diploid because it still contains the same number of centromeres.
- In multicellular organisms, there is an intermediary step between the diploid and haploid transition where the organism grows.
- The diploid generation produces spores.
- Most importantly, eggs need a diploid chromosome set in most species in order to develop normally.
- A form of apomixis where a nucellar embryo arises from the diploid nucellus tissue surrounding the embryo sac.
- Diploid dandelions develop seeds after cross- pollination and are outcrossing, or self-incompatible.
- The resulting spore may germinate to produce a diploid vegetative mycelium or it may undergo meiosis to produce a haploid mycelium.
- The mycelium within this structure remains as a dikaryon, diploid formation only occurring within the modified hyphal tip called the basidium.
- In the sporophyte phase, a diploid (see ploidy) plant body grows and eventually produces spores through meiosis.
- The diploid (2n), spore-producing generation of the plant reproductive cycle, the dominant and conspicuous plant in the vascular plants.
- The new species were formed when one diploid species fertilized a different diploid species and produced a tetraploid offspring.
- The resulting diploid zygote develops into the seed embryo, which is the diploid sporophyte of the next generation.
- A diploid cell resulting from fertilization of an egg by a sperm cell.
- Meiosis in the diploid zygote nucleus occurs almost immediately after fusion, and results in the production of four haploid nuclei.
- Einkorn wheat (T. monococcum) is diploid (2 chromosomes). Most tetraploid wheats (e.g.
- Finally, in the sporic life cycle, the living organism alternates between haploid and diploid states.
- The diploid human genome consists of 46 chromosomes, 22 pairs of autosomes, and 1 pair of sex chromosomes (the X and Y chromosomes).
- Inside this multinucleate structure, the heterokaryotic nuclei fuse to form diploid nuclei that undergo meiosis.
- Actual fusion to form diploid nuclei is called karyogamy, and may not occur until sporangia are formed.
- Four haploid microspores are produced from each diploid sporogenous cell called a microsporocyte, after meiotic division.
- Thus endosperm cells are usually triploid (containing three sets of chromosomes) but can vary widely from diploid (2n) to 15n.
- Sexual reproduction involved the fusion of haploid mating hyphae to produce a diploid zygospore.
- Eventually, the diploid zygospore undergoes meiosis to produce haploid meiospore nuclei, which are proliferated in number by subsequent mitotic divisions.
- The vegetative state of Oomycetes is diploid, whereas true fungi are haploid or dikaryotic.
- The fungal life cycle is somewhat complex; all true fungi go through a haploid (1n) stage, a diploid (2n) stage, and a dikaryotic (n+n) stage.
- Each cell swells to form a diploid basidium, which rapidly undergoes meiosis and yields four haploid nuclei.
- The paired nuclei fuse to form the diploid basidium, which generates haploid basidiospores.
- The number of florets per spikelet increased with ploidy level: two florets in diploid, four in tetraploid and five in hexaploid wheats.
- For the genus Beta, the chromosome number possibilities are 9 (haploid), 18 (diploid), 27 (tetraploid), 36 (triploid), 45 (pentaploid) or 54 (hexaploid).
- Florouracil(5-Florouracil, 5FU): Flow cytometry a measurement method that determines the fraction of cells that are diploid, tetraploid, aneuploid, etc.
- During sexual reproduction there is a diploid phase (with two sets of chromosomes), which as a rule is very short.
- The organism is haploid, and has no diploid phase, except for the sexual sporangium.
- The dominant phase is haploid, while the diploid phase is only a few cells (often only the single celled zygote, as in Chlamydomonas).
- The zygote divides by mitotic division and grows into a sporophyte that is diploid.
- The haploid gametes produced by (most) diploid organisms are monoploid, and these can combine to form a diploid zygote.
- Fertilzation happens when the two haploid gametes fuse together, giving rise to a diploid cell that is totipotent, i.e.
- A diploid cell duplicates itself, then undergoes two divisions (tetraploid to diploid to haploid), in the process forming four haploid cells.
- Diploid (DNA Ploidy) The presence of a normal number of chromosomes in cancer cells.
- In the presence of a nonfermentable carbon source, diploid cells starved for nitrogen will undergo meiosis.
- Diploid y in true fungi only occurs for a single cell division during the creation of reproductive propagules.
- Haplontic - diploid stage quickly followed by meiosis without any mitotic divisions.
- The zygote is the only diploid stage in the life cycle.
- Meiosis quickly follows formation of the zygote, the only diploid stage.
- This involves an alternation between two generations: a haploid stage, called the gametophyte, and a diploid stage, called the sporophyte.
- Mammals are diploid organisms, which means they have two sets of chromosomes, one from each parent.
- Zygospores (diploid) are produced and remain dormant until conditions are favorable d.
- When the environment is favorable, the zygospore germinates, meiosis occurs, and diploid vegetative cells are released.
- These gametes then fertilize in the Fallopian tubes of the female, producing a diploid zygote.
- Wheat is capable of polyploidism, or having more than two sets of chromosomes (diploid).
- Einkorn wheat is diploid (2x chromosomes) and can be considered the "grandfather" breed of wheat.
- The synergid that the cells were released into degenerates and one sperm makes its way to fertilize the egg cell, producing a diploid (2 n) zygote.
- The development of a diploid cell into a haploid ovum or egg cell.
- Fusion of the sperm with the ovacyte occurs in the Fallopian tube and the resulting diploid zygote becomes embedded in the uterus wall.
- In most cases, mating leads to the creation of offspring with two different alleles at the sex locus (diploid females).
- NUCLEI OF HYPHAE All fungal nuclei are HAPLOID except for transient diploid zygote that forms during sexual reproduction.
- The hyphae in a mushroom are (A) diploid; (B) dikaryotic; (C) monokaryotic.
- Sperm cells contribute half of the genetic information to the diploid offspring.
- For example, in some cases transgenic animals may be haploid for a given gene and it may be desired to try to provide a diploid offspring via crossing.
- In automictic species the offspring can be haploid or diploid.
- Haploid gametes are produced from diploid cells by a process called meiosis.
- In this process, the diploid cell in the ovule creates a new embryo.
- The fusion of male and female gametes produces a diploid zygote which develops into a new sporophyte.
- Some have sexual cycles,involving meiosis and the fusion of gametes or gametic nuclei resulting in a diploid zygote.
- Sexual reproduction involved the fusion of haploid mating hyphae to produce a diploid zygospore, a process shown in Figure 4.
- Meiosis may be delayed until after a population of diploid cells is produced.
- Fixation probabilities and effective population numbers in diploid populations with overlapping generations.
- Nature > Life > Animals > Zygote
* Asexual Reproduction
* Cell Division
* Diploid Cell
* Diploid Nuclei
* Diploid Number
* Diploid Organism
* Diploid Spores
* Diploid Sporophyte
* Diploid Zygote
* Haploid Cells
* Haploid Spores
* Life Cycle
* Life Cycles
* Sexual Reproduction
* Yeast Cells
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