One source of genetic variation is crossing over which occurs in ______________.

Amino acids are linked onto a polypeptide chain by ribosomes. What carries free amino acids to the ribosomes?

A duplicated chromosome consists of two __________.

The cell cycle results in the production of ______.

In radishes, red is dominant (RR), white is recessive (rr) and pink color results in heterozygotes (Rr). This is an example of:

A human karyotype showing 22 pairs of autosomes and two X chromosomes would be

Multiple Choice Question Two systems shown start from rest. On the left, two 40-lb weights are connected by an inextensible cord and on the right, a constant 40-lb weight pulls on the inextensible cord. Neglecting all friction forces, which of the following statements are true? 

Long Question B: subpart How many Degrees of Freedom (DOFs) does the system have? Choose the appropriate answers from the dropdown menus below. # DOF

Multiple Choice Question A car travels along the track shown with constant speed. At which point will the car have the maximum acceleration. 

Long Question B: subpart Select the correct number of unknown variables for the system of equations. Choose the appropriate answers from the dropdown menus below.