Which statement supports the theory that all organisms are related?
A) The genetic code is almost universal.
B) All flies have two wings.
C) Body parts with similar functions in different species are determined by unrelated genes.
D) Prokaryotes have circular chromosomes.
A) The genetic code is almost universal.
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Eutrophication is the addition of ________ to an aquatic ecosystem. a. nutrients b. producers c. water d. None of these choices
e. oxygen
Sperm are produced in the:
a. testes b. vas deferens c. epididymis d. prostate gland e. penis
Why do the Galápagos Islands and the Hawaiian Islands have so many endemic species of flies and birds? Check all that apply.
A. There are numerous islands in each archipelago. B. Each bird or fly species has many common ancestors. C. There is adequate distance between islands to allow divergence. D. The founder effect was common when islands were colonized.
A certain species of tiny wasp lays its eggs within the bodies of caterpillars, whereupon the larvae of the wasp consume the 10-g caterpillar. Assuming that the entire victim was consumed, what would be the total mass of the eventual adult wasps that
emerge from the caterpillar? A) 100 g B) 1 g C) 2 g D) 10 g