Answer:
210
Explanation:
Frequency of dominant allele is represented by "p"
and frequency of recessive allele is represented by "q"
Given

Thus,

As per Hardy Weinberg's second equation of equilibrium -

Substituting the given values in above equation, we get -

So the total number of heterozygous individual is equal to
An ecosystem is the area in which an animal lives. This can be like a coral reef or a forest.
Commensalism, the crab benefits from the oyster but the oyster is neither benefited nor harmed.
Answer:
Beavers and their dams play an important role in nature. Because of the dramatic effects their dams have on surrounding ecosystems, these mammals are considered a keystone species. By constructing dams they create wetlands -- lush environments which attract fish, ducks, frogs and other creatures.
Explanation: