Which of the following could only be a result of nondisjunction during meiosis of sperm formation and not egg formation? A) XYY

B) XXX

C) XXY

D) XO

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

In which state was more than 100 billion tons of coal mined in 2005?