Answer:
Frequency of B allele is 0.6681
Explanation:
If p represents the frequency of dominant allele and q represents the frequency of recessive allele, according to Hardy-Weinberg equilibrium:
p + q = 1
p² + 2pq + q² = 1
where p² = frequency of homozygous dominant genotype
q² = frequency of homozygous recessive genotype
2pq = frequency of heterozygous genotype
Given that number of recessive chestnut horse = 28
Total horses = 226 + 28 = 254
frequency of b² genotype = 28/254 = 0.1102
frequency of recessive b allele = √0.1102 = 0.3319
So, frequency of B allele =
1 - 0.3319 = 0.6681
Hence frequency of B allele is 0.6681
Negative impact on the environment is unnatural, fake
Primary succession takes place when barren land is exposed and made available for plant growth.
The first step is the retreat of the glacier. Next, pioneer species begin to inhabit the exposed land. These species include lichens and they break down rocks and create soil. Some years later, more complex plants start growing in the soil and insects also begin to inhabit it. The remains of all of these organisms add nutritional value to the soil. As soil thickens, more complex plants and animals inhabit the region, until finally, the soil is thick enough for entire forests to grow.
A cell is a living structure. It is made by process of cellular reproduction. It dies because of various activities inside or outside the cell. That is why we can say that a cell has life span and it dies too.
Hope it helps ...
