When a researcher transplanted the nucleus of an intestinal cell from a tadpole into an egg cell whose nucleus had been destroyed, the egg developed into a normal frog. This illustrates that
A) genes are gained during the process of differentiation.
B) a nucleus that is removed from its normal location is influenced by adjoining cells.
C) each cell of an organism has all the genes needed for development.
D) the homeobox genes in a transplanted nucleus undergo mutation.
E) scientists can clone a human by putting one of his or her nuclei into an egg cell.
C
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The most successful parasites are the ones that live in harmony with their hosts
Indicate whether this statement is true or false.
The Hardy–Weinberg principle describes how genotype frequencies are established in sexually reproducing
organisms.
a. True b. False
Four of the five answers listed below are different forms of a class of nucleic acids. Select the
exception. a. template b. ribosomal c. messenger d. transfer e. DNA
Which population of organisms would be in the greatest danger of becoming extinct?
a) a population of organisms having few variations living in an unstable environment b) a population of organisms having many variations living in an unstable environment c) a population of organisms having few variations living in a stable environment d) a population of organisms having many variations living in a stable environment