I think the answer might be Euchromatin. Chromatin exist in two forms. One being Euchromatin which is less condensed and can be transcribed.
Opiates (morphine and codeine) can be detected in urine for at least 48 hours after one eats food containing poppy seeds. As little as a single bagel covered with poppy seeds could produce a false positive test for these drugs.
Answer:
Once your body starts producing the pregnancy hormone human chorionic gonadotrophin (hCG), your periods will stop. However, you may be pregnant and have light bleeding at about the time that your period would have been due.
Explanation: