There are many kinds of animals in which males have characteristics that are clearly disadvantageous to them. Which of the following statements offers the best explanation for the retention of these disadvantageous characteristics?
A. Natural selection has not gotten around to eliminating them yet.
B. Females may select males with the disadvantageous characteristics as mates over those males that lack the characteristics.
C. Males may be strong enough to overcome these characteristics.
D. The characteristic is probably an acquired characteristic.
B. Females may select males with the disadvantageous characteristics as mates over those males that lack the characteristics.
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In 2012, the International Olympic Committee began using tests that measure the levels and the body’s response to the
male hormone ____________________ as a means of distinguishing females from males when sex was que Fill in the blank(s) with the appropriate word(s).
Which of the following refers to the loss of a portion of a chromosome?
A) inversion B) translocation C) deletion D) duplication E) monosomy
All of the following maternal infections may cause congenital anomalies in the embryo, EXCEPT
A. Cytomegalovirus B. Herpes C. Rhinovirus D. Rubella E. Toxoplasmosis
A reaction that releases energy is ________.
A. endergonic B. impossible C. None of the choices are correct. D. exergonic