What is likely to cause a change in the heritable traits seen in a plant? 1) mutations in the plants DNA
2) exposure to artificial light
3) lack of nutrients in the plants roots
4) excess water in the soil

option 1

Explanation:

An animal and a plant has genetic make-‐up or genes, which are found on the chromosomes and determine the animal's and plant's traits. These characteristics or Inherited Traits stem directly from Deoxyribonucleic acid, or DNA.

the answer is a. now keep my answer here.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).