Change in allele frequencies in a population over generations

Pharyngeal arches and post-anal tails in chicks and human embryos are examples of __________________ structures. 

Humans have modified other species over many generations by selecting and breeding individuals that possess desired traits, a process called 

A species of mouse that is preyed on by owls (which can see color) at dawn and dusk varies in coat color between dark and light brown. Which of the following statements would be true if climate change lead to a darker ground color?

Short DNA segments synthesized discontinuously on the lagging strand.

Solve the Following System of Equations y = 2x + 5 y= x + 1

5x + 3y = 36 7x – 3y = 0

Which row operation is needed to transform the matrix  

How long will it take $2,000 to grow to $8,000 if it is invested at 7% compounded monthly?(Round Down to the nearest integer when reporting the solution).

A loan was paid off with an $9000 check after 18 months.  Assuming simple interest and an 6% interest rate, what was the size of the original loan?