The movement of genetic material between organisms by any mechanism other than descent is known as ____
a. lateral gene substitution
b. polyphyly
c. hybridization
d. cloning
e. horizontal gene transfer
ANSWER: e
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True or False: Like Drosophila larva, the feeding behavior of honey bees also depends on the expression of the for gene. This suggests that this gene has been evolutionarily
A. true B. false
What would likely result from a mutation in the promoter for lac operon structural genes that increased the number of RNA polymerase molecules that bind to the DNA?
_____ Polycistronic mRNA production would increase. _____ LacI protein production would increase. _____ Lactose would be metabolized much faster. _____ Lactose would be metabolized much slower. _____ Repression at the lacO site would not be reduced but expression would increase regardless.
Colonization rates from one habitat patch to another are ____ and extinction rates within habitat patches are ____ in
contiguous habitats than on islands.
a. lower; lower b. lower; higher c. higher; higher d. higher; lower e. even; lower
How do primary and secondary growth differ? In primary growth, plants _______________. In secondary growth, stems and roots ______________ and become woody
Fill in the blank(s) with correct word