If element x has 45 protons, how many electrons does it have?

Agene in a type of bacteria when the ses bacteria reproduce asexually this mutation can only be inherited by

Crossing over and independent assortment are important activities that occur during meiosis. what is the significance of these activities

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?