Respuesta :
Answer:
Option B, the addition or removal of a chromosome by a meiosis error.
Explanation:
Any change in the total chromosome number in any species lead to development of chromosomal disorder.
For creating new alleles, it is essential to induce a change in the nucleotide sequence of the DNA of any organism. This is basically done before, after or during the cell division.
The common methods of changing the nucleotide sequence of DNA is through insertion, deletion, or substitution of nucleotide sequence in any gene sequence.
Hence, option B is correct