For many species, there are often regional differences in their genes, although most of the time this differences aren't noticeable in their outward appearance.
the answer is a because if the model is based on experimental data it wont be good unless it has been tested.
Dietary fiber and fluids (mark brainliest)
Answer:
The correct option is D. Genes determine the trait of an organism.
Explanation:
Option D is correct because genes can be described as the hereditary molecules that determine the characteristics of a person.
Option A is false because each gene is made up of different nucleotide sequences.
Option B is false because genes do not occur as the same number of chromosomes. Rather, there are many genes present on a single chromosome.
Option C is false because all genes are not located in a specific location. Each gene has its specific location on the chromosome which is known as its locus.
Option E is false because genes are not units of RNA. Genes are made up of DNA.
