21. B. recessive
22. D. DD and dd
23. D. FF and ff
Answer: true
Explanation: is on quizlet :)
I pick c. because I really can't see the screen very well.
Answer:
d
Explanation:
Fishes are aquatic vertebrates having scales, pharyngeal gill slits and paired fins. ... Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change. fishes have scales that covers the skin of fishes. Thus, the correct answer is option D.
The Gutenberg Bible was the first major book printed using mass-produced movable metal type in Europe.
Hope this helps!