In meiosis I, homologous chromosomes pair with each other and can exchange genetic material in a process called chromosomal crossover. The homologous chromosomes are then segregated into two new daughter cells, each containing half the number of chromosomes as the parent cell.
Usual adult dose of benadryl is 25-50 mg per dose 3-4 times daily. Children benadryl contain 12.5 mg per tsp. You have taken 25 mg. Please feel free for any follow up query.
If you are going to give Benadryl in liquid form, then the dosage should be 0.4ml for 1lb of the body weight. For a reference, a US teaspoon can hold up to 5ml. This also should be given three times a day.