An allele is
a. the dominant form of a gene.
b. an alternate form of a gene.
c. always recessive.
d. the main factor determining a trait.
e. always one of a pair.
B; Although alleles are involved in determining a trait, the most appropriate term would be gene. The most appropriate answer among the choices is b.
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Allele frequency can be measured using what technique?
A. observation of phenotype B. gel electrophoresis C. DNA sequencing D. All of the answer options are correct. E. None of the answer options is correct.
In the spring season, snakes have been observed moving onto warm roadways heated by the sunlight. This innate behavior of moving to a warmer area is a(n) behavior.
A. taxis B. reflex C. learned D. habituation E. fixed action pattern
Explain how a hormone will trigger the signal transduction pathway in a plant.
What will be an ideal response?
Which of the following statements about a protein in the lumen of the ER is false?
(a) A protein in the lumen of the ER is synthesized by ribosomes on the ER membrane. (b) Some of the proteins in the lumen of the ER can end up in the extracellular space. (c) Some of the proteins in the lumen of the ER can end up in the lumen of an organelle in the endomembrane system. (d) Some of the proteins in the lumen of the ER can end up in the plasma membrane.