Asexual reproduction essentially involves creating copies of oneself, whereas sexual reproduction involves combining genetic material with another individual to create offspring. Some species are capable of using both asexual and sexual reproduction: under what circumstances would you expect sexual reproduction to be used?
a) stable environments
b) foreign environments
c) unpredictable environments
d) warm environments
Answer: c) unpredictable environments
You might also like to view...
Which of the following statements does not accurately describe the navigational ability of homing in birds?
A. Homing pigeons have map sense, which most likely includes landmarks as well as olfactory and visual cues. B. Homing pigeons use the sun and stars as well as the magnetic field to find their way "home" over long distances. C. If a homing pigeon is fitted with a magnetic helmet, it would not be able to find its way on a cloudy day. D. If a homing pigeon is fitted with a magnetic helmet, it would not be able to find its way on a cloudy day, but it would be able to navigate on a sunny day because it would still be able to use the sun as a compass. E. A biological clock used for time cues is not necessary for a homing pigeon to use the sun compass.
In a reversible reaction at equilibrium, the concentration of R (the reactant) is 3.0 mol/L and the concentration of P (the product) is 0.9 mol/L. At 25°C, what would be the Keq?
A) 1.5 B) 0.3 C) 1.0 D) 3.0 E) 37.5
All of the following are adaptations associated with flight that are first seen in Archaeopteryx
EXCEPT
a. feathers. b. a wishbone. c. backward facing claws for perching. d. a toothed beak.
An axenic environment is one
A. in which microorganisms remain with the person throughout life. B. that is free of microbes. C. that is a source of contamination. D. in which microorganisms remain present only for a short time. E. contaminated by microbial toxins.