What term is used to describe the fact that different genes in an organism often provide differences in observable features?
What will be an ideal response?
phenotype
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In order for a malignant cancer to metastasize, it must:
A. lose its connections to adjacent cells. B. lose its connections to the extracellular matrix. C. become motile. D. All of the above are correct.
Which category contains organisms that have mitochondria?
a. Bacteria b. Archaea c. Eukarya d. Mercaria
When Robert and John MacArthur investigated the determinants of species diversity for birds, they developed an index of foliage height diversity as a predictive variable. In so doing, which of the following determinants of diversity did they identify as important?
A) productivity B) structural complexity C) climate D) latitude
The membranes of psychrophilic bacteria have relatively high levels of ________ fatty acids, which allow them to remain semifluid at cold temperatures.
A. unsaturated B. sterol C. saturated D. aromatic