Greek philosophers Leucippus and Democritus first developed the concept of the atom in the 5th century B.C.E.
I think ans is experimentation because logic and writing is important in philosophy
Human hox genes are in four clusters: HOXA, HOXB, HOXC, and HOXD for a total of 39 genes. besides conserving the clustering of genes, evolution has also conserved the order of genes within them.
What is a gene?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes helps to make molecules called proteins. However, many genes do not synthesis for proteins. Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different among the people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
To learn more about genes, refer to:
brainly.com/question/8832859
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The answer is A because it’s the only object moving forward.