Why must males inherit colorblindness or hemophilia from their mothers?

What is the next step in muscle contraction after the actin changes shape? (apex)

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

2. if someone had the list of traits you provided in question 1, do you think he or she would be able to find you in a group of 1000 people? why or why not? if not, what other information encoded in your genes might distinguish you from the others in the group? what are other traits that are encoded for by dna?