A deletion of a particular stretch of chromosome 15 can cause either Prader-Willi syndrome or Angelman syndrome, depending on
A. the parental origin of the normal and deleted chromosome.
B. whether a nondisjunction event has occurred.
C. whether or not the region is methylated properly.
D. whether a translocation event has occurred.
Answer: A
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A mutation of an autosomal recessive trait can remain undetected for generations
a. True b. False Indicate whether the statement is true or false
Which structure contains the angiosperm egg?
A. style B. endosperm C. anther D. embryo sac E. stigma
The fragments of chromosomes split by restriction
enzymes a. have fused ends. b. have specific sequences of nucleotides and often have sticky ends. c. each have the same number of nucleotides as the original chromosome. d. form a circle. e. have modified DNA nucleotides.
Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?
A. Chitin B. DNA polymerase C. ATP synthase D. Phospholipidase E. Rubisco