Which of the following is not a general requirement for complex multicellular life?
A. Cells must retain a full range of functions,
including reproduction.
B. Cells must stick together.
C. Cells must communicate with one another.
D. Cells must participate in a network of
genetic interactions that regulate cell division.
E. All of these options are requirements for
complex, multicellular life.
A
You might also like to view...
The reason that paralogous genes can diverge from each other within the same gene pool, whereas orthologous genes diverge only after gene pools are isolated from each other, is that _____
A) having multiple copies of genes is essential for the occurrence of sympatric speciation in the wild B) paralogous genes can occur only in diploid species; thus, they are absent from most prokaryotes C) polyploidy is a necessary precondition for the occurrence of sympatric speciation in the wild D) having an extra copy of a gene permits modifications to the copy without loss of the original gene product
Succession in small ponds and lakes is usually dependent on the input of ________ from outside the ecosystem
Fill in the blank(s) with correct word
The five-toed limb of stem reptiles was modified into a limb suitable for digging. This is an example of ____.
A. convergent evolution B. morphological divergence C. analogous evolution D. morphological convergence E. distal modification
What feature of cytochromes makes them valuable in electron transport systems?
A) Aspartate residues in the active site. B) The porphyrin ring. C) The multiple ?-helices. D) The iron ion.