The cytoskeleton and extracellular matrix to support the cell’s structure. the cytoskeleton can be compared to which of the following: drawbridge, scaffolding or jelly?

According to Hardy-Weinberg equilibrium principle, in absence of any evolutionary developments, the alleles and genotypes of a living organism will remain at a constant from generation after generation.

Explanation:

Absence of evolutionary changes brings the change of genotypes frequencies to a standstill. Accordingly the punnett square method is also modified which give offsprings with following genotypes:

Hence the allele frequency of R is 0.75 and R' is 0.25 respectively.