Day length is sensed by the flower buds of a plant, not their leaves
A. true
B. false
B
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There is a mutation in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of these would characterize such a mutant?
A) It cannot bind to the operator. B) It cannot make a functional repressor. C) It cannot bind to the inducer. D) It makes molecules that bind to one another. E) It makes a repressor that binds CAP.
Which of the following female organisms contain two different sex chromosomes?
a. humans b. fruit flies c. cows d. butterflies e. cats
The region of an antibody molecule that recognizes and binds to an antigen is the
A. hinge region. B. variable region. C. constant region. D. base of the antibody molecule. E. heavy chain only.
A lichen is a mutualistic relationship between a fungus and an alga
Indicate whether the statement is true or false