What kind of molecular information is commonly used to study phylogeny among ORGANISMS that diverged from a common ancestor relatively long ago?
A. Whole genomes because they are easy to obtain.
B. Segments of cellular membrane proteins because the proteins, coded by DNA, are found in all living organisms.
C. The mitochondrial genome because it easily incurs neutral mutations.
D. Small ribosomal subunit (SSU) RNA because it is found in the genomes of all living organisms.
E. DNA sequences within introns because their sequences change rapidly over evolutionary time.
D. Small ribosomal subunit (SSU) RNA because it is found in the genomes of all living organisms.
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G3P is produced during which stage of the Calvin cycle?
a. Fixation and Reduction b. Fixation c. Reduction d. Regeneration
Respiratory proteins such as __________ in red blood cells and __________ in muscle bind oxygen
and help maintain gradients that favor gas exchange. Fill in the blank(s) with the appropriate word(s).
The cervix is attached to the ____.
A. labium minor B. ovary C. clitoris D. oviduct E. vagina
When green sea turtles travel over 1,400 miles of open ocean to the Ascension Island, they are exhibiting
A. map sense. B. direction sense. C. timely sense. D. compass sense. E. No one knows exactly how they do this.