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sveticcg [70]
3 years ago
12

In which phase(s) of mitosis do the chromosomes contain a single strand of dna?

Biology
1 answer:
Dovator [93]3 years ago
5 0
Mitosis occurs in the nucleus and forms 2 identical cells; it is a continuous process, but can be subdivided into 4 phases: prophase, metaphase, anaphase, and telophase; the resulting cells are exact duplicates (clones) of the parent cell.  All DNA is double stranded but if it’s meant a single molecule of DNA, it happens in metaphase. Each chromosome makes a copy of itself during DNA synthesis wherein the original chromosome and its copy are joined together. This complete structure is called a chromosome. The two parts (original chromosome and its copy) are called chromatids. At metaphase the two chromatids begin to separate. Each chromatid, once separated, is renamed a chromosome and consists of single DNA molecule.

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Yo can someone help me out
svet-max [94.6K]
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5 0
4 years ago
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One function of the poly-A tail on eukaryotic MRNA sequences is to help the MRNA be transported from the nucleus to the cytoplas
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Answer:

In eukaryotes, it is well known that polyadenylation is required to produce the mature messenger RNA (mRNA) molecule and it provides stability to the mRNA during translation initiation. In prokaryotic organisms, polyadenylation is required for the degradation of the mRNA in a mechanism that involves three steps: endonucleolytic cleavage, polyadenylation and exonucleolytic degradation. Moreover, it is also important to note that no evidence of polyadenylation has bee reported in some prokaryotes including the halophilic bacteria Haloferax volcanic (Slomovic et al. 2005).

Citation:

Slomovic, S., Laufer, D., Geiger, D., & Schuster, G. (2005). Polyadenylation and degradation of human mitochondrial RNA: the prokaryotic past leaves its mark. Molecular and cellular biology, 25(15), 6427-6435.

3 0
4 years ago
1. Who was Alfred Wegener?
azamat

Answer:

Alfred Lothar Wegener was a German polar researcher, geophysicist and meteorologist. During his lifetime he was primarily known for his achievements in meteorology and as a pioneer of polar research.

3 0
3 years ago
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How do I calculate Ph?
cupoosta [38]

Explanation:

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8 0
3 years ago
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Answer:

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Explanation:

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2 years ago
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