Which statement is true concerning human genetic
disorders?
a. There are more than 15,000 of them.
b. Many are rare.
c. They contribute to many age-related disorders.
d. They cause 20 to 30 percent of all infant deaths
per year.
e. All of these are true.
Answer: e
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Which statement is true for scyphozoan medusae?
(a) They are the dominant body form. (b) They are generally smaller than hydrozoan medusae. (c) Most live in freshwater. (d) They are scavengers.
No nonliving entity exhibits of possesses
which of the following? a. energetic interactions. b. DNA. c. atoms. d. heat energy e. complexity
Mitosis takes place in which region of the root?
a. zone of maturation b. root cap c. zone of elongation d. meristem region e. region of differentiation
Which of the following correctly lists organisms from least complex in overall development to most complex?
A) hydras, sponges, lobsters B) sponges, hydras, clams C) sponges, clams, hydras D) sponges, hydras, tunicates