The genotypes would be bbTT X BbTt
Assuming that bark color is represented by B (b) allele and height is represented by T (t) allele. 
Since the traits show simple dominance: blue (B) of dominant over purple (b) and tall (T) is dominant over short (t)
- The genotype of a tree that is purebred purple (bb) and tall (TT) would be bbTT
- The genotype of a tree that is heterozygous for both trait would be BbTt
- Thus, the cross would be bbTT x BbTt
More on genotypes can be found here: brainly.com/question/20730322?referrer=searchResults
 
        
             
        
        
        
<h2> Slave Economy of Cotton Plantation </h2>
Explanation:
- By 1850, of the 3.2 million oppressed individuals in the nation's fifteen slave states, 1.8 million were creating cotton. By 1850, of the 3.2 million oppressed individuals in the nation's fifteen slave states, For sure, American cotton before long made up 66% of the worldwide stockpile, and creation kept on taking off. 1.8 million were creating cotton
- About 75% of the cotton created in the United States was in the end traded abroad. Despite the fact that the bigger American and Atlantic markets depended on southern cotton right now, South likewise relied upon these business sectors for acquiring nourishment, produced merchandise, and credits. Hence, the market transformation changed the South similarly as it had a different region
 
        
        
        
Answer:
B) ecological succession
Explanation:
The analogy given in this question describes ECOLOGICAL SUCCESSION, which is the series of changes that an ecosystem undergoes over a period of time. Ecological succession is of two types viz: Primary succession and Secondary succession. 
Primary succession involves the series of changes that occurs on a new habitat that has never been previously colonized. This is the case of the colonization of bare rocks with no plant life by LICHENS. The action of the lichen, which involves secretion of acids that disintegrates the rocks into soil, paves way for the colonization of that area by new species. 
Lichens, via the role they play in primary succession by helping alter a barren area into a fertile one that accommodates other organisms, makes them be regarded as PIONEERS of primary succession.
 
        
             
        
        
        
A point mutation affects a single base and most commonly occurs when one base is substituted or replaced by another. Frameshift mutation results from the addition of one or more bases, known as an insertion, or the removal of one or more bases, known as a deletion.