Sex linked recessive inheritance: hemophilia disease is a sex-linked disorder. Jason is heterozygous and Rosy is healthy, even though her mother suffers from the disease. They want to start a family, but also want to know the risk of passing the disease on to their children. Work out a Punnett square to answer the probability question. What is the probability that Rosy and Jason will have a healthy child?

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Mars and earth have quite a few things in common. both are  terrestrial planets, both are located within the sun’s  habitable zone, both have  polar ice caps, similarly  tilted axes, and similar  variations in temperature. and according to some of the latest scientific data obtained by rovers and atmospheric probes, it is now known that mars once had a  dense atmosphere  and was covered with  warm, flowing water.