Scientific evidence in the field of developmental biology overwhelmingly demonstrates that development in different
animals is controlled by the same kinds of:
a. RNA.
b. genes.
c. habitats.
d. embryos.
e. populations
b
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Which is an example of an obligative response to an environmental factor?
1.Lizards basking in the sun more often at higher altitudes then at lower altitudes 2.Hummingbirds going into torpor at night when the temperature drops 3.Triggering of flowering by warming temperatures in the spring
f you consider the combined processes of photosynthesis and cellular respiration, the electrons found in H2O at the beginning of the light reactions end up attaching to ________ during respiration.
-O2 to make new H2O -NADPH to make new glucose -pyruvate to make ethanol -electron transport carriers to make O2 -none of the above
Sputum is obtained by
A.) swabbing the mouth to sample saliva. B.) a clean catch urine sample. C.) the patient coughing up mucus from the lower respiratory system. D.) a spinal tap above the chest. E.) a throat swab.
Null mutations can also be called loss-of-function mutations because a __________
a. null mutation completely abolishes gene function b. null mutation is lethal c. loss-of-function mutation is lethal d. null mutation does not lead to a detectable change in the phenotype e. null mutation results in the acquisition of a new function