What’s is the probe of two heterozygous purple flowers making offspring that have white flower

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.

One of the reasons that stars are so large is because

What is the role of dna ligase in the elongation of the lagging strand during dna replication?