21. B. recessive
22. D. DD and dd
23. D. FF and ff
Here is the answer. The <span>epithelial tissues that secrete hormones and other substances used in metabolism are the glands. These glands belong to the endocrine system. Hope this answers your question. Have a great day ahead!</span>
Answer: 1. CCGTAAGCGCTAGTAC
2.GCAATCGTACGAAGTA
3. TGATTGCCATCGATCG
Explanation: you just flip the letters with their corresponding ones
This would be animalia (animal cells)!