Mastering Bio Ch 9 Exam Questions with Correct Answers 2024| Correctly Solved

Mastering Bio Ch 9 Exam Questions with Correct Answers 2024| Correctly Solved Which of the following refers to the expression of two different alleles of the same gene in an individual? Codominance Why are recessive X-linked disorders more common in males than in females? Males have only one allele of the X-linked gene; females have two, and one may be normal. The most common blood type in the United States is _________. What blood type is safe for a person with this blood type to receive? O; only O If Bob has type AB blood and Anna has type O, what is the likelihood that they will have a child with type O blood? None of their children will have it. How is sex determined in egg-laying reptiles? Genes are activated during embryonic development. Hemophilia is a disease caused by a single gene that has effects on multiple systems in the body. Which of the following terms is used for this kind of genetic effect? Pleiotropy To help determine the identity of the bodies found in the Ekatarinburg grave, researchers constructed a specific type of pedigree of the Romanov family. What is this? A family tree showing the inheritance of hemophilia over several generations When Mary and Henry fell in love, they thought it was a wonderful coincidence that they both had polydactyly, an autosomal dominant trait of six fingers on each hand. Little Jonathan was born 12 months after their divorce. Johathan's hands are unaffected. Mary says that Henry is Johathan's father, but Henry says he cannot be, because if he were, Jonathan would have polydactyly. Mary is heterozygous for this trait.