Describe differences in antibody production after infection compared with after vaccination

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes

10. in which phase will crossing-over occur? a. mitosis b. metaphase ii c. prophase i d. meiosis ii