Homologous chromosomes pair up to form a structure called a:
A) tetrad. B) sister chromatid. C) homologue. D) haploid.
Answer: A
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Members of the ____ subphylum, including shrimp, lobsters, and crabs, generally have five pairs of appendages on
their heads: two pairs of antennae and three pairs of mouthparts, including mandibles.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
Discuss the uncertainties and available evidence related to the evolutionary relationships among the
following algal protists: brown algae, golden algae, red algae, and green algae. Include in your discussion how they relate to the plants. What will be an ideal response?
With almost no exceptions, the nitrogen fixers are
A. green plants. B. insects. C. beans. D. mammals. E. prokaryotes.
If you could stop diffusion of substances in fruit fly zygotes, could you stop normal development? Why or why not?
What will be an ideal response?