Which best matches a list that a scientist would make to describe a forest ecosystem? a. different types of animals and plants, and the forest soilb. an animal species, the soil, water, and nutrientsc. all the living things in the forest ecosystemd. different types of soil, rocks, and water sources in the forest

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth

Plz ! a scientist wants to produce a cow that makes a particular human protein in it’s milk the desired protein causes blood to clot and can be used to treat hemophilia (a blood clotting disorder). which of the following would be best for the scientist to use? a. genetic crosses. b. cloning. c. selective breeding. d. genetic engineering.