MRNA is the RNA that assists in Messaging the DNAs instructions to the ribosomes (sites of protein synthesis). tRNA helps to transfer the necessary amino acids to the ribosomes. In short, mRNA tells the ribosomes what amino acids to use and in what order. tRNA “retrieves” those and bring later them to the ribosomes.
1) chromosomes divides into half and is carried by spindle fibres
2) constriction start to appear
3)spindle fibres disappear
Answer: Spallanzani's experiments concerning spontaneous generation were NOT universally accepted because <u><em>He eliminated air from his flasks by sealing them</em></u>.
Explanation:
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