for most genes on the human x chromosome, what percent of xy males with a mutant allele on the x chromosome will express the mutant phenotype?

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

My question says on my assignment. read the following scenarios and decide which of the properties of life are being described. the first one is. katherine stopped on the way to school to grab some donuts. 2. because a dog cannot sweat, it has to pant in order to stay cool. 3. an elephant trun had no bone but 4,000 muscles. i have no idea what i am supposed to anwer. i can't find the answer in my notes or book that i can understand anyway

What is the correct term for an area of rotating currents in an ocean? when ocean currents combine, they create an area of rotating currents called an