Disassembly of the nuclear envelope must occur for kinetochore microtubules to form in animal cells. This disassembly of nuclear envelope is triggered by the cyclin-dependent kinase at the onset of mitosis. The reassembly is mediated by multiple interactions of the INM proteins with chromatin. Dephosphorylation of INM proteins at late anaphase/telophase is required for nuclear envelope reassembly.
Despite their seemingly simple anatomy and radial symmetry Sea urchins and sea star are a type of deuterostome, closely related to the chordates.
What are the characteristics of deuterostome?
Animals classified as deuterostomes share a common embryonic development.
The first opening during development known as the blastopore changes to the anus in deuterostomes while the mouth changes in protostomes.
They have a coelom, which forms as a result of enterocele (coelom from the digestive tract).
These creatures include the following,
- Chordata,
- Echinodermata,
- Hemichordata.
Hence the correct answer is Deuterostome.
Learn more about Deuterostome,
brainly.com/question/12500582
# SPJ4
Answer:
Eventually sand will break into very small pieces and when mixed with ... Small rock pieces become smaller through movement, as they hit other rocks and chip away. Since sand comes from a "Mother" or source rock, it is possible to determine ... Have them sprinkle a little on the paper and find the size that the particles fit .
Explanation:
i think so because of the above reason
<em><u>hope itt helps , please mark as brainliest .</u></em>
<em><u /></em>
Answer:
The correct answer is microfilaments.
Explanation:
The cytoskeleton of our play a significant role in providing mechanical support and maintaining the proper shape of the body cells.
Cytoskeleton is composed of mitrotubules, microtubule and intermediate filaments.
Microfilaments are also known as actin filaments that composed of actin polymer that interacts with myosin during muscle contraction.
Microtubules also helps in cytokinesis,cell movement,maintenance of cell shape,cellular contraction and relaxation.
