Each sieve tube element is normally associated with one or more nucleated companion cells, to which they are connected by plasnodesmata (channels between the cells). Each companion cell is derived from the same mother cell as its associated sieve tube member. Sieve tube members have no cell nucleus, ribosomes, or vacues. Thus, they depend on companion cells to provide proteins, ATP, and signalling molecules
Answer:
Im pretty sure its known as emigration but lmk if im wrong
Explanation:
D.) <span>DNA technology can increase genetic diversity by producing more variant alleles.
Hope this helps!</span>
