Sentences with phrase «cells during meiosis»

They tagged the poison protein green and the antidote protein red, and imaged the cells during meiosis.

Not exact matches

Thawing caused ice crystals to form and prevented meiosis, the cellular process during which an egg's chromosomes split up from 46 to 23, to be united later with 23 chromosomes from a sperm cell.

«We know that CEP63 depletion leads to problems during meiosis, a specialized type of cell division that is required for male germ cells to produce sperm,» explains Stracker.

Like others before him, Schrödinger was struck by the fact that chromosomes are accurately duplicated during ordinary cell division (mitosis, the way in which an organism grows) and during the creation of the sex cells (meiosis).

This genetic recombination takes place during a specialized form of cell division called meiosis.

During meiosis, the cell copies all its chromosomes, pairs them up, and shuffles sections of genetic material between the arms of the paired or homologous chromosomes.

During meiosis, the genome of a diploid germ cell, which is composed of long segments of DNA packaged into chromosomes, undergoes DNA replication followed by two rounds of division, resulting in haploid cells called gametes.

Paulo Navarro - Costa, first co-author of this study and researcher at the IGC explains: «Similarly to humans, fruit fly ovules also have a resting period during meiosis — the specialized cell division required for the formation of healthy reproductive cells.

Failure has often struck at the stage of meiosis, a type of cell division during which paired chromosomes swap DNA and the number of chromosomes per cell is halved.

Mutations can be caused by copying errors in the genetic material during cell division and by exposure to radiation, chemicals, or viruses, or can occur deliberately under cellular control during the processes such as meiosis or hypermutation.

This parceling process, called meiosis, occurs twice in the egg cell — once during a woman's fetal development and a second time as the egg is released from the ovary.

Recombination refers to the formation of new combinations of genes naturally during meiosis, which is a stage of the cell cycle where chromosomes pair up and undergo exchange.

Prior studies by Kerr el al, showed that PP2ACdc55 played an essential role in controlling the timing of metaphase to anaphase during meiosis, in other words preventing cells from prematurely exiting meiosis.

In meiosis, a precursor cell — primordial germ cell — produces four spermatozoids during spermatogenesis, while only one oocyte is formed during oogenesis (the other three cells die during the process).

Heritable genetic variation is the result of genome instability during germ cell development, instability that arises through mutation, chromosome rearrangement or chromosome mis - segregation during mitosis or meiosis.

Several more researchers presented their work during the day, including protein synthesis at atomic resolution, bio-imaging opportunities at synchrotrons, multi-dimensional imaging during plant cell differentiation, how to use electron cryomicroscopy for in situ structural biology, and how structured illumination microscopy can offer insights into the regulation of mammalian meiosis.

To understand this lesser known phenomenon, the Cole lab (Zelazowski M et al, Cell, 2017) has directly studied chromosome recombination during male meiosis in juvenile and adult mice.

Activity includes: • original cells in Prometaphase I showing bivalents and chiasma • cells in Prophase I showing chromosome line up during independent assortment • resulting gametes • (includes also - for an easier activity - cells in Interphase II showing cells after first round of division) Students to find matching cards (Prometaphase I, Prophase I and 4 resulting gametes) Aim: to get a greater appreciation of the variety in gametes created through crossing over and independent assortment during meiosis Print, laminate, chop up all cards, mix them up, go!