Fill in the blank: Researchers who seek to replace damaged genes that cause inherited diseases or to genetically engineer bacteria are studying A. Zoology

B. Planets

C. Ecology

D. Biotechnology

d i think

Explanation:

carbon

explanation:

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: