1.Which of the above are examples of incomplete penetrance? Some women with a mu
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Question
1.Which of the above are examples of incomplete penetrance?
Some women with a mutant BRCAI allele develop breast cancer, but others do not.
Some people with Marfan’s syndrome have only mild symptoms (such as being tall and thin with long, slender fingers), while others also experience life-threatening complications involving the heart and blood vessels.
A father with blood type A and a mother with blood type B can have a child with blood type O.
For some plant species, a cross between a true-breeding individual with red flowers and a true-breeding individual with white flowers produces progeny that have pink flowers.
Two of the above are examples of incomplete penetrance.
lane 3, open
lane 3, closed
lanes 2 and 4, open
lanes 2 and 4, closed
none of the lanes can correspond to cancer cell lines
3.Suppose that a gene affects head size in house flies and is inherited as a maternal effect gene. The gene exists in a normal allele, H, and a recessive allele h, which causes the fly to have a small head. A female fly with a normal head is crossed to a male fly with a small head, and all the offspring have small heads. What are the genotypes of the mother and the offspring at the Head locus?
mother = Hh, offspring = hh
mother = HH, offspring = hh
mother = Hh, offspring = Hh
mother = hh, offspring = Hh OR hh
mother = hh, offspring = hh
a.Some women with a mutant BRCAI allele develop breast cancer, but others do not.
b.Some people with Marfan’s syndrome have only mild symptoms (such as being tall and thin with long, slender fingers), while others also experience life-threatening complications involving the heart and blood vessels.
c.A father with blood type A and a mother with blood type B can have a child with blood type O.
d.For some plant species, a cross between a true-breeding individual with red flowers and a true-breeding individual with white flowers produces progeny that have pink flowers.
e.Two of the above are examples of incomplete penetrance.
Explanation / Answer
Answer:
Q1). e. Two of the above are examples of incomplete penetrance.
Q2). e. none of the lanes can correspond to cancer cell lines
Q3). a. mother = Hh, offspring = hh
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