Your answer is B I believe good luck!
If it’s not B it’s D
<span> In </span>animal cells centrioles<span> organise the pericentriolar material to produce microtubules including mitotic spindle fibres.</span><span />
Down syndrome is caused by the nondisjuction of the chromosome 21.
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Answer:
Some viruses are hard to treat because sometimes it’s not the virus that makes us sick; it’s our immune system.
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