Hemicellulose contains chains of xylose molecules
____________________ Indicate whether the statement is true or false.
True
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Compare and contrast operon and protein fusions
What will be an ideal response?
Scientists believe that mitochondria may have evolved from bacteria because
a. they both have cristae membranes. b. mitochondria have their own DNA. c. the shapes and sizes are exactly the same. d. both are surrounded by a cell wall. e. both can live independently
Large ears is a rare trait in a mainland population of mice. A few female mice homozygous for very large ears arrive at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ________
A. a bottleneck effect. B. natural selection. C. genetic drift. D. increased mutation. E. gene flow.
Speciation occurs more often between allopatric populations than it does between sympatric populations.
a. true b. false