Having a Hitchhiker’s Thumb (T) is dominant over not having Hitchhiker’s Thumb (t). If a person that is Tt has children with a person that is Tt, what is the probability of their children that will not have a Hitchhiker’s Thumb? a
0%
b
25%
c
50%
d
75%

B. 25%

Explanation: If you draw a Punnett square you see that you get TT, Tt, Tt, and tt. Now if T (Hitchhikers thumb) is dominant over t (non hitchhikers thumb) TT, Tt, and Tt are all going to have hitchhikers thumb and only tt won't have hitchhikers thumb. 1 out of 4 is equal to 25%.

the cell theory states that all living things including animals, as well as plants, are made of cells.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.