7th grade science
posted by kendall .
Write a pedigree in which there are parents and 4 children, 1 girl and 1 boy are color blind and the other girl and boy are not.
I HAVE A FEW QUESTIONS-
?- For a girl to be colorblind does her mother have to be colorblind too or just a carrier?her father?
?- If two people are heterozygous for sickle-cell anemia what are the chances that their children will have it ?(in ratio)