The unexpressed regions of split genes are called
A. exons.
B. introns.
C. endons.
D. codons.
Answer: B
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This question refers to the 5-stage process of hypothesis testing. What is the appropriate order of the stages when generating and testing a hypothesis?
(1) Experimentation is conducted to determine if the predictions are correct. (2) The hypothesis is accepted or rejected. (3) Observations are made regarding a natural phenomenon. (4) The observations lead to a hypothesis that tries to explain the phenomenon. A useful hypothesis is one that is testable because it makes specific predictions. (5) The data from the experiment is analyzed. A. 1, 2, 3, 4, 5 B. 3, 4, 5, 1, 2 C. 1, 3, 4, 2, 5 D. 3, 4, 1, 5, 2 E. 3, 4, 2, 1, 5
Which muscle lifts and braces the shoulder?
a. biceps brachii b. pectoralis major c. triceps brachii
d. deltoid e. trapezius
If a daughter expresses an X-linked recessive gene, she inherited the trait from ____
a. her mother b. her father c. both parents d. neither parent e. her grandmother
Genetic drift arises from all the following EXCEPT ________
A) a small breeding population B) a founder effect C) a genetic bottleneck D) mutations