How many different offspring genotypes are expected in a trihybrid cross between parents heterozygous for all three traits when the traits behave in a dominant and recessive pattern? How many phenotypes?
A. 64 genotypes; 16 phenotypes
B. 16 genotypes; 64 phenotypes
C. 8 genotypes; 27 phenotypes
D. 27 genotypes; 8 phenotypes
Answer: D. 27 genotypes; 8 phenotypes
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Which of the following would likely fossilize under normal environmental conditions?
A. An elephant that died near a waterhole that dried up. B. A bird that died and fell into the forest litter. C. A slug that died in leaf litter. D. A soft shelled crab that dies in an estuary. E. Both a bird and slug that die and fall in leaf litter.
What is the goal of bioremediation?
A) to improve human health with the help of living organisms such as bacteria B) to clean up areas polluted with toxic compounds by using bacteria C) to improve soil quality for plant growth by using bacteria D) to improve bacteria for production of useful chemicals
Which of the following describes what is currently known about Ctenophore symmetry?
A. Ctenophores are lacking symmetry. B. Ctenophores are possibly triploblasts because of muscle cells derived from mesoderm. C. Ctenophores are diploblasts with bilateral symmetry. D. Ctenophores are bilaterians.
A fungal species which can grow in varied climates and under diverse conditions is termed
A) microbiotic. B) endemic. C) normal. D) ubiquitous. E) mycosis.