Which best describes the first step in genetic engineering? Fragments of DNA that have desired genes are isolated to form recombinant DNA for use in a host.
All the DNA from a desired organism is isolated to form recombinant DNA for use in a host.

Fragments of DNA that have desired genes are isolated to form recombinant DNA for use in a host.

Explanation:

The first step in the genetics therapy it is to isolate the gene of interest. You can see this procedement in the image below.

The Cas9 of the image is the CRISPR associated with the protein 9. CRISPR is a bacteria's enzym which can edited portions of ADN.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.