A
Explanation:
Meiosis is the formation of non identical gametes
about 1500 pounds
A mature Holstein cow weighs about 1500 pounds and stand 58 inches tall at the shoulder. Holstein heifers can be bred at 15 months of age, when they weigh about 800 pounds. It is desirable to have Holstein females calve for the first time between 24 and 27 months of age.