Experiments with ribbon worms and planaria have shown that
A. it is easy to hybridize the two species in nature.
B. Pax6-related genes are not always required for eye regeneration.
C. the DNA of each is sufficiently similar that they can be hybridized in a lab setting.
D. their eyes are examples of convergent evolution.
D. their eyes are examples of convergent evolution.
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Fungi are made of bundles of threadlike ________.
A. chitins B. mycelia C. lichens D. hyphae
The effects of inbreeding depression has been documented in ________
A) plants only B) animals only C) both plants and animals D) This is a hypothetical construct and has yet to be documented.
Select the phylum that includes deuterostome animals that are exclusively marine and have radial symmetry as adults.
A. Rotifera B. Chordata C. Echinodermata D. Porifera E. Cnidaria
Recently, the bones (not fossils) of a possible new species of humans (in the genus Homo) have been found on an island in Indonesia (an island nation southeast of Asia). Using radiometric dating, scientists can show that these people were alive as
recently as 17,000 years ago. According to the information in this chapter, why do you think they probably used tools? What will be an ideal response?