You are studying the DNA of a person who you know has two defective copies of the gene that encodes phenylalanine hydroxylase. You are surprised to find that this person also carries two defective copies of the gene for homogentisic acid oxidase
What disease symptoms will this person exhibit? (Assume pathway intermediates are not available from sources outside the phenylalanine breakdown pathway.)
A. This person will exhibit symptoms of alkaptonuria.
B. This person will exhibit symptoms of tyrosinosis.
C. This person will exhibit symptoms of phenylketonuria
D. This person will exhibit symptoms of alkaptonuria and phenylketonuria.
E. This person will be phenotypically normal.
C
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All of the following are true about prosimians except
A. they are big-eyed mammals with increased visual acuity. B. only two lineages survive today. C. they are nocturnal. D. they are widespread.
Which of the following phyla is NOT made up of bryophytes?
a. Pterophyta b. Hepatophyta c. Bryophyta d. Anthocerophyta e. all of these are bryophytes
__________ behavior is altered by experience. Fill in the blank(s) with the appropriate word(s)
When arthropods molt, they may change in four of the following ways. Which one is the exception?
A. Body form and maturity B. Sex C. Body size D. Eating habits E. Sensory structures