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One copy of a duplicated chromosome, formed during the S phase of the cell cycle, that is still joined at the centromere to the other copy; also called sister chromatid.

one of the two daughter strands of a replicated chromosome, joined by the centromere to the other daughter chromatid
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...

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One of the two identical parts of the condensed chromosome during mitosis.
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Subunit of a chromosome after replication and prior to anaphase of meiosis II or mitosis. At anaphase of meiosis II or mitosis when the centromeres divide and the sister chromatids separate each chromatid becomes a chromosome.

A chromatid is one of two identical halves of a replicated chromosome. During cell division, the chromosomes first replicate so that each daughter cell receives a complete set of chromosomes.

One of the strands of a duplicated chromosome joined by a single centromere, only seen during cell division.
View : Dr Chromo's lecture on Meiosis
View : Dr Chromo's lecture on chromosomes Pronounce:
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Chromatids separate from each other during Anaphase II. Homologous Chromosomes segregate during Anaphase I.
Click here to review this concept in more detail.
Continue to Question 2 ...

One of the two identical strands of a newly replicated chromosome.
Chromogenic substrate
A substrate that changes color when modified by a specific enzyme.

Chromatid. Each of the two daughter strands of a duplicated chromosome joined at the centromere during mitosis and meiosis.

chromatid Generally refers to a strand of a replicated chromosome; consists of DNA and protein. PICTURE ...

chromatid homologous chromosomes joined to each other at the centromere; present during the prophase of mitosis.
chromatin compacted DNA and protein.
chromosomes linear units of DNA.

(crow-ma-tid) [Gk. chroma, color]
Either of the two strands of a replicated chromosome, which are joined at the centromere.
chromatin ...

chromatid /KROME-ə-təd/ One of the two identical nucleoprotein strands of a single replicated chromosome, which are joined at the centromere. MORE INFORMATION ...

Chromatid: One of two copies of a replicated chromosome during mitosis. Together they are called sister chromatids. Each one becomes a daughter chromosome at anaphase of mitosis and at the second meiotic division.

sister chromatid (available in G2 after chromosome duplication), or on the
homologous chromosome (in G1; that is, before each chromosome has been duplicated).

sister chromatids Chromatids joined by a common centromere and carrying identical genetic information (unless crossing-over has occurred). PICTURE ...

Sister chromatid - Refers to the copy of a chromosomes that results from DNA replication and is still closely linked to its original.
Somatic cell - Any plant or animal cell that is not a germ cell. The class of cell formed during mitosis.

The term which McClung (1900) proposed for each of the four threads making up a chromosome-pair at meiosis (Gk. chroma, colour; for the derivation of '-id', see diploid).

Each of a pair of identical DNA molecules after DNA replication, joined at the centromere.

Chromatid at the pole
Sets of chromosomes form new nuclei
Chromosomes become long and thin, uncoil!
Nuclear envelopes form around the nucleus ...

Chromatid one of the two identical strands of genetic material that make up a chromosome.
Chromatography a technique used to separate the individual components of a mixture.

chromatid A replicated chromosome joined to its sister chromatid by the centromere; separates and becomes daughter chromosome at anaphase of mitosis or anaphase of the second meiotic division.

A chromatid is a single DNA molecule.
Double-stranded chromosomes have two chromatids; normally, each one is identical to the other. The point where the two chromatids are attached is called the centromere.
Chromosome Doubling vs DNA Synthesis ...

The chromatids are initially attached by adhesive proteins along their lengths.
As the chromosomes condense, the region where the chromatids connect shrinks to a narrow area, the centromere.

Condensed chromatid pairs are held together at the metaphase plate by balanced bipolar forces exerted on the chromosomes by kinetochore microtubules in the mitotic spindle.

Label two chromatids with each letter. This way they can line up the pairs of homologous chromosomes during metaphase I and demonstrate all of the phases of meiosis. This leads right into a lesson on dihybrid crosses and probability.

The pairs of chromatids line themselves up on the equator as in mitosis, with sister chromatids orientated toward opposite poles.
Anaphase II
The centromeres divide and the chromatids separate, migrating to opposite poles.

Anaphase II: CHROMATIDS separate and begin moving to the poles.
Telophase II: CLEAVAGE FURROW forms beginning CYTOKINESIS.

Chromatid The two identical halves of a chromosome produced for cell division and meiosis.
Chromosome Structures found in the nucleus of cells composed of DNA and proteins.

During S phase, every chromosome replicates to yield two identical sister chromosomes (called chromatids ) that remain attached at their kinetochores. G 2 , a period of apparent chromosomal inactivity, follows S phase.

Compare: sister chromatids.
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The centromeres break and sister chromatids separate
Cytokinesis begins
Compare Anaphase II to Anaphase I and to the Anaphase stage of mitosis.
Telophase II ...

chromosome 1 2 3 4 5 6 7 8 9 10 11 12
chromosomes 1 2 3 4
ciencia ...

Chromatid — One of two replications of a chromosome formed prior to cell division and joined together at their centromeres. The centromere is the last portion of a chromosome to replicate during cell division.

Fragile sites -- a non-staining gap of variable width that usually involves both chromatids and is always at exactly the same point on a specific chromosome derived from an individual or kindred.

After the DNA is replicated in the S phase preceding meiosis, the homologous chromosomes (each composed of two chromatids) pair up in Prophase I and then crossing over, ...

In female meiosis the two chromosomes first duplicate to make four chromatids, but then three chromatids are effectively thrown away (as 'polar bodies' in mammals, or non-functional 'megaspores' in plants), ...

It is customary in genetics to use strand for chromatid. It has therefore been used in that sense in some books, where it has also been used for one double-chain (that is, duplex) DNA molecule.

In prophase, the nuclear envelope begins to break down, the nuclear material (or chromatin) condenses into rod-shaped chromosomes consisting of two sister chromatids, and the mitotic spindle begins to assemble.

At metaphase the chromatids move to the equator. The sister chromatids are two DNA molecules formed by DNA replication and are therefore identical.

Just like this is a visible chromosome but it's only made out of one molecule, we don't bother calling it a chromatid at that point because chromatid means a sub part of the chromosome.

Anaphase is preceded by metaphase, by the end of which fully condensed sister chromatids are arranged in pairs, their centromeres lying along a surface known as the metaphase plate.

The replicated chromosomes (sometimes known as chromatids), remain attached to one another at a region known as the centromere.
During mitosis, the attachment between chromatids is broken and one chromatid is segregated to each daughter nuclei.

Centromere the central region of a chromosome which holds the sister chromatids together
(centro = center; mer = part)
Cerebellum the wrinkled-looking posterior part of the brain
(cereb = the brain; -elle = small) ...

Chromosomes and chromatids with a centromere near one end.
addition rule
See sum rule.

centromere: The clear constricted portion of the chromosome at which the chromatids are joined and by which the chromosome is attached to the spindle during cell division. MeSH, 1991 ...

Recombination: Exchange of gene segments by crossing over at chiasmata (exchange of material between non-sister chromatids). The exchanged sections are usually homologous.

centromere [Gr. kentron - point, spine, center of a circle; Gr. meros - a part]. The region of a chromosome where two chromatids are joined and where spindle fibers attach during mitosis and meiosis.

See also: See also: Chromosome, Chromosomes, Cell, Cells, DNA

Biology  Chordates  Chromatin

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