Suppose a couple has come to see you to discuss the probability of their children having cystic fibrosis (cf). cf is known to be an autosomal recessive disease caused by a single gene mutation that has pleiotropic effects including thick mucus in the lungs and excessively salty sweat. after discussions with the couple, you learn that they both have a history of the disease in their families. both the man and his wife are phenotypically normal, but both have one parent and one sibling with cf. the other parent in each case is phenotypically normal. explain to the couple the probability of their children having cf or being carriers for the cf gene. explain to them why their children can have the disease even though neither of them have the disease. draw a punnett square to illustrate your points.
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Biology, 22.06.2019 02:00, sanakhalid8881
The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important
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Biology, 22.06.2019 15:30, dogwisperer101
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.
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Suppose a couple has come to see you to discuss the probability of their children having cystic fibr...
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