The answer is D.Reproduction
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Answer:
Genetic engineering is accomplished in three basic steps. These are (1.) The isolation of DNA fragments from a donor organism; (2.) The insertion of an isolated donor DNA fragment into a vector genome and (3.) The growth of a recombinant vector in an appropriate host.
They found that some mutations that each produced mutant phenotypes separately yielded wild-type phenotypes when present together in the same DNA.
A mutation is a change in the nucleic acid sequence of an organism's genome, a virus' genome, or extrachromosomal DNA. DNA or RNA can be found in the viral genome. Errors that occur during mitosis, meiosis, or viral replication led to mutations. The term phenotype refers to all of an organism's observable traits that emerge from the interplay of its genotype (total genetic inheritance) and environment or mutation.
There are two different sorts of phenotypes: wild type and mutant phenotype. Wild type refers to people who have the normal phenotype that the bulk of the natural population possesses, whereas mutant refers to people who have a phenotype that differs from the normal population.
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