If the child is born with blue eyes, would the pair of alleles the child carries be homozygous or heterozygous? can blue eyes ever be heterozygous?

Having blue eyes is a recessive trait. Blue eyes will almost always result in two recessive, homozygous alleles (bb). Eyes are a bit complicated though, because 7% of people with blue eyes have heterozygous alleles. So basically, the general rule is that most children born with blue eyes have homozygous alleles, but their are rare genetic possibilities. I’m not an expert on this and mainly just trying to recall what I learned in 7th grade science, so I hope this helps. :)

i think its both a and b

the right is separation by density .

take the blood which is a good example of a heterogeneous mixture.

blood is a vital liquid in our body, which transports oxygen from the air to our lungs so we can breathe. it is also used to eject wastes, such as carbon dioxide, to bring cells and molecules of the immune system to the tissues, and to spread hormones throughout the body. it corresponds to plasma, red blood cells, white blood cells, platelets and hemoglobins combined.

in medical tests centrifugal force is used to separate the different components of the blood.

in general, the centrifugation will allow to separate and analyze the different components of the blood, to know if the rate of white blood cells in the blood of a patient, for example, is normal, and therefore to know if his system immune is integrity.

under the action of centrifugal force, the solid components in the blood are drawn to the bottom of the tube in which the blood is contained. the centrifugal force then acts as an accelerated settling. it separates plasma from red blood cells and white blood cells.