Which developmental event occurs last?
a. tissue specialization and growth
b. gamete formation
c. gastrulation
d. cleavage
e. fertilization
a
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Xanthophyll pigments __________
A. prevent formation of reactive oxygen species B. absorb light energy C. convert light energy into heat D. reflect yellow light E. All answer options are correct.
Which of the following is an example of the
result of a beneficial mutation?
a. A new digestive enzyme that is better at digesting cellulose. b. A new digestive enzyme that is equal in its ability to digest cellulose as the existing enzyme. c. A new digestive enzyme that is less effective at digesting cellulose. d. A new protein that interferes with the digestive process. e. A new protein that has no function
Which of the following anemias is associated with premature red blood cell death?
a. aplastic b. megaloblastic anemia c. hemolytic anemia d. pernicious e. iron-deficiency anemia
Drosophila developmental mutants of __________ genes produce larvae with mirror image segments
a. gap b. pair-rule c. segmentation d. paternal effect e. segment polarity