The accompanying figure illustrates ____
a. anaphase I
b. metaphase I
c. metaphase II
d. crossing over
e. migration
ANSWER: d
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A chromosome region may be deleted by all of the following means EXCEPT ____
a. bacteria b. virus c. chemical d. irradiation e. environmental factor
What does the chi-square test tell us about the linkage of two genes?
What will be an ideal response?
Jonas Salk's polio vaccine trials of 1954 involved giving placebos to 201,229 children and the polio vaccine to 200,745 children
Out of the placebo group, 142 children developed polio, whereas 57 children from the vaccine group developed polio. Approximately how many more times likely was a child to develop polio if he or she were NOT vaccinated? A) thirty B) ten C) five D) three
What is the name of the human disorder in which a deletion from chromosome 5 typically leads to severe mental retardation and a malformed larynx?
a. triple-X syndrome b. cri-du-chat c. Down syndrome d. Turner syndrome