Answer:
Type A blood or Type B blood
Explanation:
O is a recessive trait so both allels would have to be O for it to be O type blood, and none of the punett squares contain 2 O's
Both of the parents would need to have ww because the trait of a straight hairline is recessive.
Answer:
changing environment
Explanation:
If the species fails to adapt, it will die off.
The solution would be hypertonic.
A hypertonic solution is one where the concentration of solutes is greater outside the cell than inside.
1: left atrium, right atrium, right ventricle.
2: atrioventricular valve, valves in the aorta, valves in the veins.