The source of most mitochondrial DNA an organism inherits is ________
A) the nucleus of the sperm
B) the nucleus of the egg
C) the cytoplasm of the sperm
D) the cytoplasm of the egg
E) None of these choices
D
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Nearly all bacteriophages infecting members of the Archaea possess genomes made of ________.
A. ssRNA B. dsRNA C. ssDNA D. dsDNA
What two processes results in genetically-identical products?
a)mitosis and meiosis b)meiosis and asexual reproduction c)meiosis and sexual reproduction d)mitosis and sexual reproduction e)mitosis and asexual reproduction
Which animal has an endoskeleton made entirely of cartilage and reinforced with cartilage?
A) bullfrog B) mackerel C) shark D) robin
Which result is an observed effect of global warming on organisms?
A) Some species of birds and frogs now begin their breeding seasons earlier in the year. B) Corals "bleach" when decreased water temperatures cause them to expel their symbiotic algae. C) Many butterfly populations have shifted their ranges toward the equator. D) Many polar bears produce more offspring as their hunting grounds increase in size.