The female reproductive tract of some Drosophila species blocks sperm of another species from reaching her eggs
This is an example of ____.
a. gametic isolation
b. hybrid breakdown
c. hybrid inviability
d. mechanical isolation
e. temporal isolation
ANSWER: a
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The figure above illustrates one possible ____
structure of ____. a. primary; proteins b. primary; carbohydrates c. primary; lipids d. secondary; proteins e. tertiary; proteins
Which type of RNA interacts with nuclear proteins to form a ribonucleoprotein complex responsible for intron removal?
What will be an ideal response?
Changes in tool-kit gene expression (i.e. Hox genes) has been important in what events?
A. The diversification of body plans in arthropods. B. The development of the vertebrate jaw. C. The diversification of mollusk body plans. D. All of the above.
The plant pathogen ________ is a member of the alphaproteobacteria that alters plant cells by introducing DNA into them
A) Azotobacter B) Agrobacterium C) Rhizobium D) Pseudomonas E) Bdellovibrio