You are a genetic counselor, and a couple comes to you with concerns that if they have a child
together it could have hemophilia. The woman has an X-linked recessive form of hemophilia, but the
man does not. Which of the following would be a correct thing to tell them?
a. Any child that they produce will have a 50% chance of having hemophilia.
b. All of their male offspring will have hemophilia, and each of their female offspring will
have a 50% chance of having hemophilia.
c. None of their offspring should have hemophilia, but all of their female offspring will be
carriers for hemophilia.
d. Each of their male offspring will have a 50% chance of having hemophilia, and while their
female offspring should not have hemophilia they will each have a 50% chance of being
carriers.
e. All of their male offspring will have hemophilia, and while their female offspring should
not have hemophilia, they will all be carriers.
E
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Which of the following is/are TRUE regarding the molecular mechanism of "sensitization" in Aplysia, shown by the gill-withdrawal reflex?
a. The L7 neuron releases 5HT, and this ultimately leads to high levels of Ca2+ entry into the sensory neurons. b. The L29 neuron releases 5HT, and this ultimately leads to high levels of Ca2+ entry into the sensory neurons. c. The L29 neuron releases dopamine, and this ultimately leads to high levels of Na+ entry into the sensory neurons d. None of the above
Luke went to a pediatrician when he was 6 months old. The pediatrician consulted a graph and concluded that Luke was in the 97th percentile for height, weight and length. The pediatrician predicted that Luke would be tall when he reached adulthood.What type of logic is being used when the pediatrician uses the graph to make conclusions about Luke's progress?
A. reductionism B. inductive reasoning C. deductive reasoning D. applied theory
The division between the central nervous system and the peripheral nervous system is based on the anatomical differences between cells in the two locations.
Answer the following statement true (T) or false (F)
Phenotypic similarity that evolved independently in different lineages is called ____
a. cladogenesis b. anagenesis c. embryogenesis d. homology e. homoplasy