Albinism is due to the inability to make ________
A) collagen B) tyrosine C) melanin D) hair
Answer: C
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Which of the following correctly matches the name of a biological clock to the timescale at which it operates OR the type of activity with which it might be associated?
A. annual: tides B. circadian: periodical cicadas C. lunar: feeding, sleeping D. circadian: feeding, sleeping E. lunar: days or years
Which cell structure is most likely responsible for sensing gravity?
A. central vacuole B. Golgi appartus C. chloroplast D. amyloplast E. apical meristem
In a colony of 100 guinea pigs, 16 show the recessive trait of bristly hair. What is the frequency of the
recessive allele in the population?
a. .4 b. .16 c. .04 d. .016 e. .2
Which panel of the figure contains DNA fragments
that will be incorporated into host cells? a. A b. B c. C d. D e. all of these