What determines the development of male or female sex organs in the human embryo?
a. environmental factors
b. genes on the X chromosome
c. genes on the Y chromosome
d. genes on both the X and Y chromosomes
e. neither the X or the Y chromosomes
C
Biology & Microbiology
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Carbon dioxide dissolves in water to form ____
Fill in the blank with the appropriate word.
Biology & Microbiology
Describe the difference between cytokinesis in animal and plant cells
What will be an ideal response?
Biology & Microbiology
Predators often avoid a mimic species because
of a. its bad taste. b. its toxic secretion. c. its resemblance to a model species. d. its painful sting. e. all of these.
Biology & Microbiology
Upon closer examination, the fish appeared to have died from a lack of oxygen. What time of day did the fish most likely die?
A) Late at night B) Just before dawn C) In the middle of the afternoon D) At sundown
Biology & Microbiology