As geographically isolated human subpopulations became adapted to different environments over time, different phenotypes resulted, causing the evolution of various human ________
Fill in the blank(s) with correct word
races
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In vertebrates, sympathetic nerves (e.g., those responsible for the fight-or-flight response) are part of the (select all correct choices):
A. autonomic (involuntary) nervous system. B. peripheral nervous system (PNS). C. central nervous system (CNS).
Individuals with a mutation in the SRY gene develop into
a. males with YY combination of sex chromosomes b. females with YY combination of sex chromosomes c. females with XY combination of sex chromosomes d. hermaphrodites e. they do not complete development
Which type of lake has the largest amount of nutrients?
A) eutrophic B) oligotrophic C) dystrophic D) lotic
The function of the epididymis is to:
a. secrete an alkaline fluid that neutralizes the acids of the vagina. b. produce a nutritive fluid for the sperm. c. provide a place for maturation and storage of sperm. d. secrete mucus that lubricates the penis. e. maintain sperm at a low body temperature