A countercurrent heat exchanger enables an animal to _____. See Concept 40.3 (Page 883) A countercurrent heat exchanger enables
an animal to _____. See Concept 40.3 (Page 883) increase heat loss by evaporation slow metabolism when food is not available produce more heat when needed reduce the loss of body heat to the environment absorb heat from the environment
1 answer:
Answer:
reduce the loss of body heat to the environment
Explanation:
- Convection is the heat loss by air or water moving across the skin surface.
- When exposed to cold air, cover exposed skin and take shelter from the wind.
- The thicker the insulating clothing layer, the better it prevents convection.
- Conduction is the direct contact with an object.
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Answer:
<em>Bright white fur 3/4</em>
<em>Black fur 3/16</em>
<em>brown fur 1/16</em>
Explanation:
From the Punnet's square analysis (see the attached image);
- <em>A_B_ 9/16 </em>
- <em>A_bb 3/16</em>
- <em>aaB_ 3/16</em>
- <em>aabb 1/16</em>
A_B_ and A_bb will always give offsprings with bright white fur since allele A always mask the effect of B.
aaB_ will always give offsprings with black fur since allele a does not produce any protein.
aabb will give offsprings with brown fur since b codes for brown fur colour.
Hence, the phenotypic ratio of the offspring will be;
<em>Bright white fur 3/4</em>
<em>Black fur 3/16</em>
<em>brown fur 1/16</em>
