Human Body Systems
A homozygous recessive and a heterozygous dominant.
What pairing of adults can result in a 50% chance of recessive vs 50% chance of Dominant gene freckles?
The second layer of our atmosphere that gets warmer as you get higher and may vary anywhere from 20 to 5.5 miles high.
A self-replicating material present in nearly all living organisms as the main constituent of chromosomes.