Changes in the physical structure of a chromosome; includes deletions, duplications, inversions, and translocations.
What will be an ideal response?
Chromosomal mutation
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The evolution of insect wing patterns is best explained by
A. a new gene mutation. B. the modification of an existing gene for a new function. C. homoplastic convergence. D. gene duplication and divergence. E. conserved genes.
What kind of population spacing would you expect for a species that is strongly territorial?
A. uniform B. clumped C. random D. uniform or clumped depending on whether it is a source or sink metapopulation E. uniform or clumped depending on the life history strategy of the species
Your student is trying to create a "Gene X" knockout mouse by introducing a recombinant construct into embryonic stem (ES) cells, selecting transformants, and introducing the transformed cells into mouse blastocysts
He designed his construct as follows: NeoR----region of homology to Gene X---HSV tk--- region of homology to Gene X where NeoR is the neomycin-resistance gene and HSV tk is the Herpes Simplex virus thymidine kinase gene. He transforms the ES cells and exposes them to G418 and ganciclovir. Explain to your student he failed to recover transformed ES cells.
The primary reason certain plants grow well as houseplants is because they may be adapted to
A. dry growing conditions B. growing short branches C. lack of temperature changes D. areas that normally lack direct sunlight E. areas that get very little mineral content in the soils