The genotype of the offspring depends on the genotype of the parents which is missing from the question.
If the two parents have the genotypes BB and BB, the offspring will all have the genotype BB.
If the two parents have the genotypes Bb and Bb, the offspring will be 1 BB, 2 Bb and 1 bb.
If the two parents have the genotypes bb and bb, all the offspring will be of genotype bb.
If the two parents have the genotypes BB and bb, all the offspring will have the genotype Bb.
If the two parents have the genotype Bb and bb, the offspring will have the genotypes 1 Bb and 1 bb.
If the two parents have the genotype BB and Bb, the off spring will have the genotypes 1 BB and 1 Bb.
You can see that there are many situations depends on the genotype of the offspring. Therefore, the genotype of the offspring must be defined in the question.
Answer:
If there is a change in the environment, the particular species which does not manage to adapt either tries to translocate to a different habitat or it perishes. Adaptation requires a long time and does not happen overnight so if there is an option of moving out the animal adapts to do so. If that doesn’t happen we are looking at local extinction of the concerned species. This is one of the reasons why we are facing extinction of several species in our times. The rate at which we are changing the characteristics of habitats and even wiping out certain pristine habitats is leading to extinctions.
Explanation:
hope it helps
Answer: C. The farmland is undergoing secondary succession, which may or may not restore the original climax community.
Explanation:
Ecological communities are highly <em>dynamic</em>- they gradually evolve. Typically their progression involves:
- colonizing species exploiting uninhabited areas (Primary succession)
- becoming a habitable and increasingly complex community
- there is increased diversity of organisms (Secondary)
The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a <em>climax community. </em>While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.
Like the abandoned farmland near Horatio’s home, secondary communities do not begin with the removal of soil and all biological life; other species, seen here in the grassland, may be more suited to the altered conditions and begin to modify the area creating a new community.
However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.
