During cell division a piece of a chromosome breaks off and reattaches to the same chromosome, but the piece is now in reverse order. How would this abnormality affect the chromosome?
a. An extra copy of the chromosome will be made to ensure normal function.
b. The inverted section will be deleted to prevent problems.
c. The chromosome will take on a circular configuration.
d. Genes in the section that was inverted could lose normal function.
d. Genes in the section that was inverted could lose normal function.
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In males, testosterone (select all correct choices):
A. directs the development of male reproductive structures during embryogenesis. B. directs development of male secondary sexual characters during puberty. C. helps maintain adult health. D. acts on Sertoli cells. E. acts on Leydig cells.
Ischemia in the heart often leads to angina pectoris, which is ____
Fill in the blank(s) with the appropriate word(s).
The higher the concentration of solute in a solution, the __________ the effective water concentration
and the __________ the osmotic pressure. a. lower; lower b. lower; higher c. higher; higher d. higher; lower e. Answer cannot be determined from the information provided.
The SARS virus is a member of the family of viruses called ________.
Fill in the blank(s) with the appropriate word(s).