If their data they collected from their experiment proved their hypothesis correct, then yes, their supported hypothesis can be called a scientific theory.
The right choice for your question is A. A dog has three alleles for a certain fur color.
The answer is B Photosynthesis
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
The answer to your question is Sclerenchyma cells have thick lignified secondary walls. Answer: Sclerenchyma