Hemophilia is a genetic disorder that causes a protein required for normal blood clotting to be missing. in a cross with a mother who carries the allele for hemophilia and a father who has normal blood clotting what would be the phenotypes of the offspring?
a. one female normal, one male normal, one female carrier, one male with hemophilia
b. all females carriers of hemophilia, all males normal
c. all females normal, all males with hemophilia
d. all females normal, all males normal

When does a spring tide occur? question 9 options: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall. they occur on the date of the vernal equinox each year, no matter what stage the moon is in. this is why they are called spring tides. they occur when the sun, moon, and earth are at 45-degree angles from each other. this happens once every spring. they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur all year long.