meiosis

Such a gamete may be produced by tetraploid tissues, or it may be the result of faulty meiosis.

The cell prepares for meiosis just as it does for mitosis. But as the DNA condenses, each chromosome finds its homologous counterpart.

Meiosis is a special form of cell division that takes place in the reproductive organs that produce sex cells.

After meiosis of megasporocyte, pistils of female flowers continued to grow and those of male flowers aborted.

One pair of homologous chromosomes resulting from the division of a tetrad during meiosis.

And the meiosis did not show any difference on their ploidy level, no matter which parents the genetic messages were acquired from.

Meiosis comprises a pair of specialized nuclear divisions that produce haploid germ cells.

The stability of meiosis seed-set rate and plumpness of kernels might be changed when the cytoplasm of a triticale was changed.

In addition, correlations between the meiosis and callose deposition in the wall of megasporocyte have been discussed.

Bivalent Describing any pair of homologous chromosomes when they pair up during MEIOSIS.

Microspore mother cells in an anther started but did not end the meiosis at the same time.

Within the rice anther, meiosis of the pollen mother cell produces microspores, which further develop into pollen grains.

During meiosis, homologous chromosomes undergo pairing, synapsis, recombination and faithful segregation.

As the nucleus divided twice, and chromosomes replicate only once, so halve the number of chromosomes after meiosis.

Generally meiosis occurs before gamete formation, resulting in the gametes being haploid (having half the normal number of chromosomes).

Terminalization The movement of chiasmata to the end of the bivalent arms, a process that may occur during late prophase I of meiosis.

Because meiosis, so that each type of organism from generation to generation are able to maintain the diploid chromosome number.

Cytological studies were conducted on pollen mother cells(PMCs)meiosis of autotetraploid broccoli using chromosome preparation technique.

Haploid - Having only one set of chromosomes, usually by meiosis, or resulting from an unfertilized eggs.

Meiosis, which usually precedes spore or, sometimes, gamete formation, halves the chromosome number to produce haploid gametes .

In meiosis it is not until anaphase II that the centromere divides, the chromatids being termed daughter chromosomes after separation.

Seedlessness is an elite trait in citrus and triploid citrus is seedless in nature due to the abnormal meiosis and embryo abortion.

On germination, the zygospore undergoes meiosis to produce haploid cells that give rise to a new thallus.

Chiasma (pl. chiasmata) A connection between homologous chromosomes seen during the prophase stage of meiosis.

These findings provide insights into the evolution of meiosis and kinetochore regulation during mitosis and meiosis.

the interchange of sections between pairing homologous chromosomes during the prophase of meiosis.

The results showed that the meiosis behavior of pollen mother cell of sterile is normal. Abortion occurred after formation of tetrads.

Pollen mother cells(PMC)meiosis and relevant parameters of diploid and autotetraploid broccoli were studied comparatively.

Meiosis occurs in gametes before the formation of a certain time, it is a nuclear male and female gametes are single-fold.

To track sperm development, they used a fluorescent protein that marked cells undergoing--or that had undergone--meiosis.

the contraction of chromatin towards one side of the nucleus during the prophase of meiosis.

The cytokinesis of the microspore mother cells in meiosis is successive and the microspore tetrads are tetrahedral.

Chromomere A small beadlike deeply staining structure seen in chromosomes during prophase of mitosis and meiosis.

Anaphase The stage in mitosis or meiosis when chromatids are pulled toward opposite poles of the nuclear spindle.

The phenomenon of crossing over during meiosis results in exchanges of genetic information between chromosomes.

Methods: Using germ cells in meiosis as material to make sections, the changes of meiosis phases of spermatocyte were analyzed.

The formation of nuclear membrane, there nucleoli, after cytoplasmic division, the completion of meiosis.

This demonstrates that the genes on a Y chromosome are essential for meiosis and sperm maturation.

These observations clarify that the PAIR1 protein plays an essential role in establishment of homologous chromosome pairing in rice meiosis.

Therefore, defects in meiosis are a leading cause of both infertility and birth defects.

Meiosis is an essential stage in gamete formation in all sexually reproducing organisms.

Autopolyploids may arise from the fusion of diploid gametes that have resulted from the NONDISJUNCTION of chromosomes at meiosis.

This is the first study of the genetic causes of infertility that links a particular sex chromosome meiosis-specific gene to sterility.

The male, XY stem cells underwent the crucial process of "meiosis" - halving the number of chromosomes.

The microspore mother cells in meiosis is successive and the microspore tetrads are tetrahedral and bilateral symmetry.

Objective: To determine the effect of methylbenzene on meiosis of spermatocyte from mouse testis.

The position of the centromere and the behavior of chromosomes during meiosis also important.

Apospory The development of the gametophyte directly from the cell of a sporophyte, thus bypassing meiosis and spore production.

Tetrad 1. A group of four cells formed as a result of meiosis in a spore mother cell .

BOULE protein, a new member of DAZ family, is found in 2001, and is the key regulation factor in meiosis of human spermatogenesis.

Microwave radiation excites the hydrogen bond in the cells and can interfere with meiosis, which leads to tumors.

Successive cytokinesis in the microspore mother cells (MMCs) follows meiosis.

These results provide some directly evidence for explaining the mechanism of plant meiosis.

The meiosis process of pollen mother cell in hemp were basically normal, and cytoplasm divided simultaneity .

Preliminary Studies on the Relationship Between Meiosis of Pollen Mother Cells and Pollen Abortion of Aloe arborescens Mill .

In sexually reproducing organisms like us, a process called meiosis halves this number.

The separation of homologous chromosomes during meiosis.

In male meiosis an unaligned chromosome blocks meiotic progression.

The megaspore mother cell meiosis to form a linear megaspore tetrad.

The authors have observed the behaviours at mitosis and meiosis in Lilium davidii var. unicolor which has B-chromosomes.

Wang and his team found that sex chromosomes did play a role in meiosis.

Karyotype Analysis and Cytology Observation on Meiosis of Paeonia ostii 'Phoenix White'

Required for normal segregation in mitosis and meiosis.

The effect of lead nitrate and nickel chloride on maturation and meiosis of mouse oocyte in vitro was studied.

Moreover, the correlation of PMC meiosis, phylliform index and RAPD marker was discussed.

During the period of meiosis, through observing tentatively, chromosome bridge and structure of lag etc were found.

Spore mother cell A cell that gives rise to four haploid spores by meiosis.

Studies on the karyotype, Giemsa C-bands and PMC meiosis of ramie.

As a result, prophase II is much shorter than prophase I. In fact, all of the phases of meiosis II proceed rapidly.

Meiosis is the process of cell division that produces gametes in both sexes.

These are the haploid sexual spores that were produced following meiosis inside the basidium .

There are two types of cell division: meiosis and mitosis.

But Candida doesn't bother with meiosis when it mates.

used of the association of three or more homologous chromosomes during the first division of meiosis.

In meiosis, the association of four homologous chromatids seen during the pachytene stage of prophase.

Since a pollen grain is the result of meiosis, it has a single set of chromosomes and it is this that is recognized.

Zygote meiosis can be observed with fresh-water algae Chlamydomonas, Spirogyra, Chara for assistant materials.

triticum aestivum ; megasporocyte ; meiosis ; cytoplasmic reorganization

Preparation of Meiosis Integrate Synaptonemal Complex Specimen with Improved Silver-Staining Technique

Study on the Correlation between the Space of Flag Leaf and Main Morphological Traits of Meiosis in Pollen Cells of Barley

Correlation Analysis between the Space of Flag Leaf, Young Spike Length and Meiosis Dynamics of Wheat

the meiosis and the sexual determination mechanism of Blattaria, locusts, grasshoppers, stinkbugs and silkworms;

Analyses of a O. Officinalis Monosomic Alien Addition Line in Meiosis with GISH

Investigation on meiosis of the rare and endangered plant--Calycanthus chinensis

Relationships between the flag leaf space and meiosis of pollen mother cells in wheat

The Effects of Equilibration Temperature, Protective Agent and Time on the Meiosis Competence of Mouse Oocyte

Genetic Analysis of Synchronized Chromosome Separation in Wheat Meiosis

The Effects of Follicular Fluid and Hypoxanthine on Resumption of Meiosis in Ovine Oocytes Cultured in vitro

Stages of MMC meiosis and its timely discrimination of white poplars

Alien Cytoplasmic Effects on Trait Production and Chromosome Behaviors at Meiosis in Crossing Alloplasmic Wheat with Rye or Triticale

Studies on meiosis characteristic and fertility restoration of male sterile wheat with Aegilops kotschyi cytoplasm

Cytological studies on meiosis and male gametophyte development in cucumber

Comparison of pollen mother cells meiosis in diploid and autotetraploid broccoli

Meiosis and its stages of pollen mother cells in Chinese white poplar

Observation on Micronucleolus during Meiosis of Pollen Mother Cell in Cucumber

Genetic Damage at Meiosis Stages of Tradescantia paludosa Induced by Monitoring Pollution Rivers in Fuzhou City

Random Orientation of Chromosomes During Meiosis

Observation on Meiosis of Microspore Mother Cell in Pepper CMS Maintainer

Meiosis of Pollen Mother Cells in Autotetraploid Broccoli

Recent Progress in Mammalian Oocyte Meiosis Study

Traits and Meiosis of Sterile Tomato Mutant Induced by Space Flight

Teaching meiosis and the related knowledge through sketch map

A New Inquiry into the Method of Karyokinesis and Meiosis Teaching

Observations on abnormal meiosis of pollen mother cells in Lilium davidii var. Unicolor

Corresponding relation between MMC and PMC meiosis of Eucommia ulmoides

Mechanism and Research Progress of Meiosis

Research on Meiosis of Some Dendranthema Species and Their Hybrids

Morphology and Meiosis of Chinese White Poplar

Late prophase of meiosis I in lily microsporocytes

A New Slide Technique for Meiosis Chromosome of Plant Cell

The Status and Prospect of Meiosis in Porphyra

Comparison of Meiosis and Mitosis

The process of meiosis and genesis of microspore in Heptacodium miconioides

consists of meiosis and litotes

they are formed by meiosis of somatic pollen mother cells

The attentioned questions in the teaching of meiosis

The Research of Male Locust's Meiosis

First Note on Chromosomes and Male Meiosis Division of Collembola in China