What percentage of human sperm cells carry an x chromosome?
a. 0%
c. 50%
b. 25%
d. 100%

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

Explain the significance of meiosis in sexual reproduction

You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars