Define paedomorphosis and allometric growth, and briefly explain how each contributes to the process
of macroevolution. What will be an ideal response?
Paedomorphosis occurs when juvenile characteristics are retained in the adult stage. Retention of these
features could alter an organism’s behavior and ecological habits resulting in a new species.
Allometric growth occurs in a species when there are changes in development. Alteration of growth
rates results in change in the shape of an organism. These shapes may or may not be adaptive. If they
are adaptive, a new species may be born If they are not adaptive, extinction of the species may occur.
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Which portion of the limbic system is involved in forming memories?
A. thalamus B. hypothalamus C. hippocampus D. amygdala
In the following genetic sequence, identify the correct complementary strand of DNA for the sequence 3' CAGTACCGTAAGCT 5'
a. 3' GTCATGGCATTCGA 5' b. 5' GTCATGGCATTCGA 3' c. 5' AGCTTACGGTACTG 3' d. 5' GTCATGGCTTCGA 3'
What term is used to describe the situation when the loss of an allele because of selection against one of its phenotypes is balanced by natural selection in favor of the allele for another phenotype?
A) equilibrium frequency B) heterozygote fitness C) restriction fragment length polymorphism D) single nucleotide polymorphism E) balanced polymorphism
Differentiation produces cells in the body with different appearances and capabilities because:
A) different cells have different mutations B) different cells use different sets of genes C) cells migrate to locations where they are needed D) different cells possess different genes E) different cells are in different parts of the body