I POSTED THIS A MILLION TIMES BUT EVERYONE IS GIVING ME THE WRONG ANSWER PLEASE HELP ME IF YOU CAN What is the main function of the Krebs cycle?

A. To break glucose down into two pyruvate molecules
OB. To produce carbon dioxide for use in the thylakoid
O C. To produce large numbers of ATP molecules
O D. To provide molecules for the electron transport chain

d

Explanation:

To provide molecules for the electron transport chain

the answer is d.) homologous; have mammary glands

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).