The dna polymerase pol-δ a. is involved in dna synthesis. b. is involved in proofreading newly synthesized dna. c. exhibits exonuclease activity. d. a, b, and c. e. none of the above

Option (D).

Explanation:

Different DNA polymerase are present in eukaryotes that are necessary for the replication of the DNA. DNA polymerase composed of four subunits : POLD2, POLD1, POLD4, and POLD3.

The DNA polymerase delta are involved in the DNA synthesis. This polymerase has both the exonuclease activity and proofreading ability of newly synthesized DNA.

Thus, the correct answer is option (d).

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.