A newborn puppy has 2 alleles for floppy ears. During which part of the reproductive process did the alleles separate as the puppy was developing?
O meiosis
O mitosis
O DNA replication
O fertilization

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred