Hey i need and only the correct
which statement is a specific example of how artificial selection is used in society?

a. the nucleus of a cow's skin cell is inserted into an egg cell from a female cow.

b. genes are spliced from a bacterial cell and inserted into a cell of an apple tree.

c. pesticides applied to beetles yield a pesticide-resistant population of beetles.

d. two racehorses with desirable traits are bred to produce a superior racing horse.

the correct answer is b

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.