What can be said about Drosophila development?
A. Maternal genes determine the initial course of development after fertilization.
B. Paternal genes determine the initial course of development after fertilization.
C. Zygotic genes determine the initial course of development after fertilization.
D. Syncytial blastoderm genes determine the initial course of development after fertilization.
Answer: A
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Which is a characteristic of tapeworms?
a. Tapeworms have a simple life cycle. b. Tapeworms have a complete digestive system. c. Tapeworms have a closed circulatory system. d. Tapeworms have a well developed sensory system. e. Tapeworms have bodies that consist of hundreds of reproductive segments.
Which statement about complementary base pairing is not true?
a. Complementary base pairing plays a role in DNA replication. b. In DNA, T pairs with A. c. Purines pair with purines, and pyrimidines pair with pyrimidines. d. In DNA, C pairs with G. e. The base pairs are of equal length.
Which of the following would not be seen in a cross-section through the woody part of a root?
a. sclerenchyma cells b. parenchyma cells c. sieve-tube elements d. root hairs e. vessel elements
What two characteristics define a biome?
A. latitude and rainfall B. amount of precipitation and the types of plants found there C. temperature and rainfall D. temperature and the types of plants found there E. altitude and temperature