Answer:
the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.
Explanation:
Answer:
RNA interference
Explanation:
Interference RNA is a mechanism of post-transcriptional silencing of specific genes, so that small RNA molecules complementary to an mRNA lead to its degradation, thus preventing its translation into proteins.
Gene silencing by interfering RNA is induced by small double stranded RNA molecules of 21 to 27 nucleotides called siRNA. These siRNAs undergo a series of processes in the cell as a result of which their double stranded RNA unfolds in a sense strand and an antisense strand. The antisense strand binds to the mRNA chain specifically for base complementarity, causing the resulting complex to be recognized by cellular and degraded mechanisms. Each siRNA is highly specific for the target nucleotide sequence to which it degrades. This phenomenon of gene interference occurs naturally in the body, being involved in the development and defense against viruses.
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mitosis
=1
=2
=2
=46
=in the body (nucleus of the cell
=for growth and replace old worn out cells
Meiosis
=4
=4
=0
=23
=diploid cells (only in sexual reproductive organism
=the production of gametes
