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Amanda [17]
3 years ago
5

How does fertilization affect the chromosome number of a zygote?

Biology
1 answer:
olya-2409 [2.1K]3 years ago
4 0

Answer:

Fertilization is the fusion of gametes to form the zygote. ... Fertilization allows restoring of the chromosome number of the species as the two nuclei of gametes fuse together. Therefore, the number of chromosomes in the zygote is twice the number of chromosomes in gametes.

Explanation:

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Morning! I just need some help with this question! Ex. If it is A and it is mitosis then you would put A-Mitosis
polet [3.4K]

In cell biology, mitosis (/maɪˈtoʊsɪs/) is a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained. Therefore, mitosis is also known as equational division. In general, mitosis is preceded by S phase of interphase (during which DNA replication occurs) and is often followed by telophase and cytokinesis; which divides the cytoplasm, organelles and cell membrane of one cell into two new cells containing roughly equal shares of these cellular components. The different stages of mitosis altogether define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two daughter cells genetically identical to each other. So yes i would put A-Mitosis

Closed intranuclear pleuromitosis is typical of Foraminifera, some Prasinomonadida, some Kinetoplastida, the Oxymonadida, the Haplosporidia, many fungi ( chytrids, oomycetes, zygomycetes, ascomycetes ), and some Radiolaria ( Spumellaria and Acantharia ...

Closed extranuclear pleuromitosis occurs in Trichomonadida and Dinoflagellata.

Closed orthomitosis is found among diatoms, ciliates, some Microsporidia, unicellular yeasts and some multicellular fungi.

Semiopen pleuromitosis is typical of most Apicomplexa.

Semiopen orthomitosis occurs with different variants in some amoebae ( Lobosa) and some green flagellates (e.g., Raphidophyta or Volvox ).

5 0
2 years ago
Which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts?
Zolol [24]

Mitochondria and chloroplast have similar DNA, which is not evidence for the endosymbiotic origins of mitochondria and chloroplasts.

According to the endosymbiotic theory, a chloroplast and a mitochondria were the independent prokaryotes. Both can be ingested by a large prokaryote and resist digestion. As a result, they continued as endosymbionts and eventually lost some of their autonomic properties. They divide by binary fission, have their own genetic material, possess 70s ribosomes, and Both include their own transcriptional and translational machinery.

Therefore, considering endosymbiotic origin theory, Both Mitochondria and chloroplast have similar DNA is not a piece of evidence.

Learn more about endosymbiotic origins theory here

brainly.com/question/771962

#SPJ4

6 0
1 year ago
Which is not something a scientist would study?
zubka84 [21]

Answer:

astrology

Explanation:

astrology is regarded as a pseudoscience. it is based on faith and not any provable concepts.

7 0
3 years ago
Read 2 more answers
Prior to mitosis and after s phase, each chromosome of a eukaryotic cell consists of a pair of identical structures called
dexar [7]
Hello!

I believe the correct answer to your question would be sister chromatids.

Hope this helps, and have a lovely rest of your day :)
3 0
3 years ago
In a resting state, sodium (Na ) is at a higher concentration outside the cell and potassium (K ) is more concentrated inside th
padilas [110]

In a resting state, sodium (Na ) is at a higher concentration outside the cell, and potassium (K ) is more concentrated inside the cell. During an action potential, the sodium levels <u>increase </u>inside the cell.

During an action potential, the potassium level inside the cell decreases, and the sodium level inside the cell increases. That is to say, there is an outflow of potassium and an inflow of sodium ions.

Action potential usually occurs when an electrical signal disrupts the balance of Na+ and K+ within a cell membrane, briefly depolarizing the concentrations of each.

Learn more about potassium here: brainly.com/question/21439467

#SPJ4

3 0
2 years ago
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