during which phase of mitosis do the chromatids become chromosomes
by Hiram Brekke
Published 2 years ago
Updated 1 year ago
Sister chromatids
Sister chromatids
A sister chromatid refers to the identical copies (chromatids) formed by the DNA replication of a chromosome, with both copies joined together by a common centromere. In other words, a sister chromatid may also be said to be 'one-half' of the duplicated chromosome.
https://en.wikipedia.org › wiki › Sister_chromatids
of a chromosome separate and start to travel towards opposite poles during anaphase of mitosis. Sister chromatids become individual chromosome as soon as they separate. Hence answer will be ANAPHASE .Mar 9, 2017
The life cycle of a cell from formation to its own division. - Includes: growth, preparation for division, and division into two daughter cells, each of which starts the cycle over again. Binary Fission. Division of one cell reproduces entire organism (unicellular organism) Multicellular.
What signal is released during anaphase?
internal signal = cells will not begin anaphase until all chromosomes are properly attached to the spindle at the metaphase plate. Growth Factors. Released by certain cells and stimulate other cells to divide. Platelet-derived growth factor (PDGF) is made by blood cell fragments called platelets.
How many picograms of DNA are in a nucleus?
Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. In which stage of the cell cycle did the nucleus contain 6 picograms of DNA? *
Do cells need growth factors to divide?
To divide, cells must be attached to a substratum. Cancer. These cells do not respond normally to the body's control mechanisms. These cells also may not need growth factors to grow and divide. They may make their own growth factor. They may convey a growth factor's signal without the presence of the growth factor.
How long do chromatids stay attached to each other?
A) chromatids remain attached to one another until anaphase.
How are chromosomes reeled in?
E) The chromosomes are "reeled in" by the contraction of spindle microtubules, motor proteins of the kinetochores move the chromosomes along the spindle microtubules, and nonkinetochore spindle fibers serve to push chromosomes in the direction of the poles .
Which proteins move the chromosomes along the spindle microtubules?
B) Motor proteins of the kinetochores move the chromosomes along the spindle microtubules.
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