DNA stores the instructions (genetic information) used to build proteins.
The unknown type of corn had to be
yellow.
There were offspring that were red and yellow.
The red corn only has recessive alleles (r and r) so, the yellow alleles( R) didn't came from this type. They came from a yellow type corn.
And since the offspring were NOT all yellow (the dominant color) we know that the yellow corn was
heterozygous for the color trait (Rr).
50% red (rr)
50% yellow (Rr)
Due to the fact that the white blood cells can change their shape and squeeze in through smaller parts of the blood flow, they have the ability to protect the immune system from any infections. They able to move easily in the blood flow, meaning that they can stop any infections or illnesses that would have came the person's way. This is why a person that has more white cells is not ill that often because there are more cells able to reach that particular place of infection.