Amagnified cross-sectional view of a horsetail stem shows the tube-shaped cells of xylem. what is their function?
1. reproductive system of alteration of generations
2. transport system that moves water
3. storage system for extra starch formed

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: