(Choice B) 555 homologous pairs of chromosomes comprising a total of 202020 chromatids
Explanation:
Homologous chromosome are those two chromosomes which have same gene but different in shape and appearance. Chromatids are the identical copies of chromosome. Single chromosome splits into double number of chromatids. In 555 pairs, 101010 chromosomes are present so 101010 chromosomes splits into 202020 chromatids.
The function of a protein is determined by its shape. The shape of a protein is determined by its primary structure (sequence of amino acids). The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.
By it alleles, and there genes what one plant have the other may not have see it all depends on the out come of the alleles-genes that they come up with .