The allele is dominant. What this means simply put is that there is a much higher chance of it occurring than of blue eyes being on the kid. If one parent has brown eyes and the other has any other, there is a higher chance that a brown eyes allele will be used.
This probably won't help since this was a year ago but here it is:
The diaphragm adjusts the amount of light on a light microscope.
Answer:
The main function of the meristem is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.