Which of the observations below were made by Darwin?
a. Highly similar species are clustered in time and space.
b. Climate and physical conditions are insufficient to explain the geographic clustering of similar, closely related species.
c. Geographic features seem to play an important role in the clustering of similar, closely related species.
d. B and C, but not A.
D
You might also like to view...
Viruses are ______ -coated fragments of DNA or RNA.
Fill in the blank(s) with the appropriate word(s).
Which of the following has been used to measure the relatedness of primates?
a. hemoglobin amino acid sequences b. blood types c. embryonic development d. bone structures e. brain shape
The sac fungi are distinguished from all other groups of fungi because their reproductive structures are ________.
A. borne on basidia B. zygospores C. motile D. inside an ascus
The organelle that can collect, package, modify, and transport molecules is called the:
A. plasma membrane. B. Golgi apparatus. C. mitochondria. D. vesicle.