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 take Benadryl as a sleep aid, the maximum recommended dose is 50-100mg. The USFDA mandates 50mg. South Africa, the UK, Australia and New Zealand permit a dosage of up to 100mg.