Which is not a characteristic of homologous chromosomes? A. Same length B. Same centromere position C. Exact same type of alleles D. Same genes

C

Explanation:

Homologous chromosomes do not necessarily have to have exactly the same type of alleles.

Homologous chromosomes consist of a pair of chromatids with the same length, centromere position, and more or less the same gene. However, the gene can have the same or different alleles, meaning that the genes can be expressed differently in individuals. Dominant alleles are usually expressed while recessive alleles remain in the background.

The correct option is, therefore, C.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.