Answer:
genotypes:
0% homozygous black fur (BB)
50% heterozygous black fur (Bb)
50% homozygous brown fur (bb)
phenotypes:
50% black fur
50% brown fur
Explanation:
B b
b . Bb bb
b . Bb bb
8 + 20 = 28.
28 - 7 = 21.
There are 21 wolves left.
Answer:
Selectively permeable or semipermeable means specific substances are allowed to pass through the plasma membrane.
Explanation:
The plasma membrane is selectively or semipermeable in nature because the plasma membrane allow only specific molecules such as nonpolar substances or hydrophobic substances such as steroidshormone to pass through it and prevent the passage of polar solute molecules such as water,glucose.
To transport these polar solutes across the membrane an additional protein is needed in case of transport of water channel protein is needed whereas in case of glucose transport carrier protein is required.
Answer:
I, II, III, IV
Explanation:
Evaporation happens when a liquid turns into a gas.
Condensation happens when water vapor turns into a liquid.
Examples of precipitation is rain and snow. Runoff does happen because of precipitation.
Bacteria fixes nitrogen into forms by usable plants. Bacteria is very important to to the water cycle.
