A series of programmed changes encoded in DNA, through which a fertilized egg divides into many cells that ultimately are transformed into an adult organism, is known as ____
a. transformation
b. development
c. inheritance
d. homeostasis
e. compensation
b
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How are echinoderms uniquely different than other protostomes?
What will be an ideal response?
The burning of fossil fuels by cars and factories has most affected the ______________ cycle.
Fill in the blank(s) with the appropriate word(s).
When AIDS patients die, it is because
A) there are no treatments to slow the progress of the disease. B) HIV destroys the internal organs. C) their immune systems cannot defend them from other infections. D) the AIDS virus has a high rate of mutation. E) they lack HIV antibodies.
What is unusual about the amino acid composition of histones? How is the function of histones related to the amino acid composition? Of which histones are nucleosomes composed?
What will be an ideal response?