Abraham Lincoln’s son, Robert, showed no signs of Marfan syndrome
a. True
b. False
True
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Water enters the water vascular system of echinoderms through the:
a. spines. b. mouth. c. madreporite. d. tubercle. e. tube feet.
What distribution pattern is the most common
in the natural world? a. random b. uniform c. clumped d. stratified or layered e. homogeneous
What is difference between an epidemic and a pandemic?
A) An epidemic is a disease; a pandemic is a treatment. B) An epidemic is restricted to a local region; a pandemic is global. C) An epidemic has low mortality; a pandemic has higher mortality. D) An epidemic is caused by a bacterial infection; a pandemic is caused by a viral infection.
Mutations that occur in somatic cells are:
A) responsible for the appearance of human diseases such as sickle-cell anemia. B) always harmful. C) never harmful. D) passed on to successive generations when they are incorporated into gametes. E) not passed on to future generations.