Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be thymine?
A) 8%
B) 16%
C) 42%
D) 58%
A
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What stimulates muscle contractions during labor?
a. HCG b. estrogen c. signals from vagina d. oxytocin e. gonadotropins
Turner syndrome (XO) is a sex chromosome aneuploidy. Of the effects listed below, which one is not usually seen in this syndrome?
A) unusually short stature B) infertility C) skeletal abnormalities D) unusually long limbs
Chancroid is characterized by:
What will be an ideal response?
In the United States, purple loosestrife, Japanese and Amur honeysuckle, Australian Melaleuca, and Brazilian pepper are all:
A) native flowering plants nearly brought to extinction by consumption by exotic insects. B) native flowering plants nearly brought to extinction by competition from exotic plants. C) exotic flowering plants that have caused relatively few problems for native species. D) exotic flowering plants that have caused significant problems for native species.