Homozygous<span>. An organism that has two identical alleles for a trait.</span>
Answer:
alleles are different versions of a gene
The answer is b. the germ theory of disease.
Louis Pasteur proposed that some diseases are caused by germs in the XIX century.
The concept of atomic weight was proposed by John Dalton. Benjamin Franklin proposed a simple theory of electricity, which was later compounded by Charles du Fay. The theory of evolution was proposed by Charles Darwin.